UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

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FORM 10-K

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(MARK ONE)
[X]   ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE
     SECURITIES EXCHANGE ACT OF 1934

For the fiscal year ended December 31, 2005

OR

[   ]  TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES
     EXCHANGE ACT OF 1934

FOR THE TRANSITION PERIOD FROM ___________ TO  _____________

Commission file number 0-12254

SCIENTIFIC TECHNOLOGIES INCORPORATED(Exact name of Registrant as Specified in its Charter)



|Oregon                                                         | 77-0170363                             
|-------------------------------------------------------------- | ---------------------------------------
|(State or Other Jurisdiction of Incorporation or Organization) | (I.R.S. Employer Identification Number)

6550 Dumbarton CircleFremont, CA     94555

(510) 608-3400

Securities registered pursuant to Section 12(b) of the Act: None

Securities registered pursuant to Section 12(g) of the Act:Title of Class
Name of each exchange on which registeredCommon Stock, $.001 Par Value
NASDAQ National Market SystemIndicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.   
 ̈ YES
       x NO

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act.   
 ̈ YES
       x NO


Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15 (d) of the
Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant
was required to file reports), and (2) has been subject to such filing requirements for the past 90 days.   
x YES
        ̈ NO

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K (§229.405 of this chapter) is not
contained herein, and will not be contained, to the best of registrant's knowledge, in definitive proxy or information statements
incorporated by reference in Part III of this Form10-K or any amendment to this Form 10-K.
   x


Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, or a non-accelerated filer.
See definition of "accelerated filer and large accelerated filer" in Rule 12b-2 of the Exchange Act. (Check one):

Large accelerated filer      ̈ Accelerated filer     ̈ Non-accelerated filer    x


Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).  
 ̈ YES
       x NO


The aggregate market value of voting stock held by non-affiliates of the
Registrant, based on the closing sales price of Common Stock on June 30, 2005 as reported by the
NASDAQ Market System, was approximately $4,645,000. Such amount excludes shares held by registrant's
current directors and officers and by each person who owns 5% or more of the outstanding Common
Stock in that such persons may be deemed to be "affiliates" as that term is defined pursuant to the
Rules and Regulations of the Securities Exchange Act of 1934. This determination of affiliate status
is not necessarily a conclusive determination for other purposes.


The number of shares of the Registrant's Common Stock outstanding as of March 30, 2006 was 9,789,469  shares.



DOCUMENTS INCORPORATED BY REFERENCE

Portions of the Registrant's definitive Proxy statement to be filed with the
Securities and Exchange Commission in connection with the Company's 2006 Annual
Annual Meeting of Shareholders ("the Proxy Statement") are incorporated by
reference in Part III of this Form 10-K.






SCIENTIFIC TECHNOLOGIES INCORPORATED
                        2005 ANNUAL REPORT ON FORM 10-K
                               INDEX

|Part I.        |                                                                                       | Page
|-------------- | ------------------------------------------------------------------------------------- | ----
|Item 1.        | Business                                                                              | 3   
|Item 1a.       | Risk Factors                                                                          | 10  
|Item 1b.       | Unresolved Staff Comments                                                             | 16  
|Item 2.        | Properties                                                                            | 17  
|Item 3.        | Legal Proceedings                                                                     | 17  
|Item 4.        | Submission of Matters to a Vote of Security Holders                                   | 17  
|Part II.       |                                                                                       |     
|Item 5.        | Market for Registrant's Common Equity and Related Stockholder Matters                 | 18  
|Item 6.        | Selected Financial Data                                                               | 18  
|Item 7.        | Management's Discussion and Analysis of Financial Condition and Results of Operations | 19  
|Item 7a.       | Quantitative and Qualitative Disclosures About Market Risks                           | 27  
|Item 8.        | Financial Statements and Supplementary Data                                           | 28  
|Item 9.        | Changes in and Disagreements with Accountants on Accounting and Financial Disclosure  | 50  
|Item 9A.       | Controls and Procedures                                                               | 50  
|Part III.      |                                                                                       |     
|Item 10.       | Directors and Executive Officers of the Registrant                                    | 51  
|Item 11.       | Executive Compensation                                                                | 51  
|Item 12.       | Security Ownership of Certain Beneficial Owners and Management                        | 51  
|Item 13.       | Certain Relationships and Related Transactions                                        | 52  
|Item 14.       | Principal Accounting Fees and Services                                                | 52  
|Part IV.       |                                                                                       |     
|Item 15.       | Exhibits, Financial Statement Schedules                                               | 53  
|Signatures     |                                                                                       | 55  
|Exhibits Index |                                                                                       | 56  

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PART I

This Annual Report contains forward-looking statements that involve risks and
uncertainties.  The statements contained in this Annual Report that are not purely historical are forward-looking statements within the
meaning of Section 27A of the Securities Act of 1933, as amended,  and Section 21E of the Securities Exchange Act of 1934, as
amended. These forward-looking statements include, but are not limited to, statements regarding our future sales and anticipated
expenses, research and development expenditures; our compliance with environmental protection laws; our anticipated capital
expenditures and cash resources; the impact of workplace safety issues, safety market growth and the prospects in the oil and gas, and
water and waste water markets. These statements are not guarantees of future performance and are subject to certain risks,
uncertainties and assumptions that are difficult to predict. Factors that could affect our actual results include the level and timing of
customer orders, the mix of products sold, fluctuations in sales of complementary third party products with which our products are sold,
the timing of operating expenditures, general economic conditions in the U.S. and abroad, particularly in Asia and Europe, competition,
our ability to introduce successful new products and other factors.  You should carefully read the factors discussed in this Annual
Report under the caption "Risk Factors."

These forward-looking statements reflect management's view only as of the date of this Annual
Report. You should also carefully consider the risk factors described in other documents that we file from time to time with the
Securities and Exchange Commission.

Item 1. BUSINESS

Overview



Scientific Technologies Incorporated designs, manufactures
and distributes electrical and electronic industrial controls such as machine safety and automation sensing products. Our product lines
include safety light curtains, safety interlock switches, safety relays, profiling scanners, factory automation sensors, controls, fiber
optics, power monitoring, safety mats, safety contact strips, non-contact ultrasonic sensors and controllers, pressure transducers and
other electronic equipment supplied to industrial automation, commercial and defense customers.

We were incorporated in Oregon in 1979 and are
currently headquartered in Fremont, California. Eighty-six percent (86%) of our capital stock is currently held by our parent corporation,
Scientific Technology Incorporated, a California corporation.

We are organized into two product groups, Safety Products and
Automation Products, within two business segments. (Please see Note 10 in Notes to Consolidated Financial Statements.) The two
units maintain separate operating facilities, engineering and support organizations, which help provide more customer-centralized
sales, product knowledge and application expertise directed at the unique needs of these focused markets.  We believe this
organizational structure allows us to better target our products based on each group's area of specialization, customer-focused
applications and products.

Our corporate Internet address is

Our Products and Markets

Safety Products Group. Our leading product group, SPG, consists of two divisions: Optical Sensor Division and
Machine Services Division.  This group accounted for 85%, 84% and 84% of our sales in 2005, 2004 and 2003, respectively, for the
following products and services.

Safety Light Curtain.,

Safety light curtains consist of separate transmitter and receiver units.  The transmitter emits a "curtain" of
infrared light beams in front of the hazard area. When one or more of the beams are blocked, this is detected by the receiver and the
light curtain sends a stop signal to the guarded machine. Light curtains are extremely versatile and can guard areas that are more than
100 feet wide. By the use of mirrors, the light beams can be diverted around corners to surround multiple sides of a machine. Safety
light curtains are available with different light beam spacings, which make them suitable for many applications.  The spacing of the
infrared light beams, and the optical design employed determine the resolution, or object detectability, of the safety light curtain.

Applications for safety light curtains are found in a variety of manufacturing environments. Our customers use
safety light curtains to guard a wide variety of hazardous applications including automotive assembly lines, robot work cells,
semiconductor production equipment, metal stamping and forming, food processing, aircraft manufacturing, pharmaceutical production,
photographic film production, tire manufacturing and home appliance production.

Our safety light curtain offering includes the following
products:

- The MiniSafe, designed for inclusion in systems offered by original equipment manufacturers, or OEMs,
and end user applications. Depending on the model selected, MiniSafe light curtains are available in incremental sizes ranging from
approximately 260 millimeters to 2,100 millimeters in coverage height. The operating distance, the distance between the transmitter and
receiver, is up to 20 meters. These products are offered in various configurations with many features to meet a wide variety of machine
guarding applications.
- The MicroSafe MC4700 series light curtain product features an ultra-compact transmitter and receiver that
offers protected heights from 100 millimeters to 1,800 millimeters. Superior response time and excellent resolution, allow the MC4700
to be mounted closer to the danger points of hazardous operation. The MC4700 includes features such as: individual beam indicators,
exact channel select, floating blanking, auxiliary outputs, two digit display diagnostic, and a simple 3-box design. Designed for use in
locations in which space is limited, the small size of the MicroSafe allows it to be integrated with the support framing used on many
automated industrial machines.
- The MegaSafe MG4600 is a full featured, heavy duty product designed to meet the safeguarding
requirements for robust applications, such as automotive manufacturing.
- The PA4600 Series Perimeter Access Guard is a long range, multi-beam system used for guarding the
perimeters of robotic cells and large automated machinery.  The PA4600 has an operating range of up to 70 meters.  The simple
"two-box" design eliminates the need for a separate controller, saving the customer installation time and expense.  The
PA4600 product corresponds to the requirements of ANSI/RIA 15.06, a robot safeguarding standard used in the US, and other
international standards.
- The MP2100 Protective Light Curtain, designed to provide a
reliable, low cost guarding solution for equipment where the safety assessment indicates a low risk of injury.  The MP2100 was
designed primarily for international markets, where this type of product has been used in a variety of low risk
applications.

Selected models of the safety light curtain products are certified by independent laboratories to comply with
safety and electrical standards, including those standards required in the European Community. Products which pass the stringent
European safety certifications carry the CE test mark.

Mechanical Safety Interlocks and Safety Relays.

Safety Mats and Controllers.

To complement the safety mats, STI also manufactures several safety mat controllers, the MC3, MC4 and
MC6. These products offer selection of either an industry standard DIN enclosure (MC3) or a rugged industrial style metal enclosure
(MC4) with auto selection input voltages. The MC6 Safety Mat Controller offers enhanced diagnostics and is capable of providing up to
six individual mat zones.  All controllers are third party certified and CE marked to international standards for safety mat systems.

Our UM Series mat and safety mat controller were tested and certified by an independent test agency to an
international safety mat standard. These products carry the European CE test mark.

Laser Light Safety Scanner. In mid-2005, STI introduced and commenced deliveries of the OptoShield
OS3100 Laser Light Safety Scanner - an advanced area guarding scanner which employs laser light to monitor entry into a user-
configurable safety detection zone and send a stop signal to a guarded machine.  The scanner can be used to protect personnel from
stationary hazardous machinery, such as work cells, robot stations and internal press guarding or moving equipment, such as
automated guided vehicles and transfer carts.  Thus, safety laser scanners are an important tool for the resolution of area guarding
problems around machinery and automatic guided vehicles.  With a detection radius of 15 meters, the OptoShield can also be use in
security applications for the detection of intruders into a user-defined security zone.

In order to program the user-configurable safety detection zone, a customer would connect a computer to the
OptoShield, using the STI provided configuration software.  This software facilitates easy navigation and user set-up, allowing the
OptoShield to be user configured for a large number of area guarding arrangements. Specific guarding configurations are computer
stored by the user for later setup into the OptoShield.

The OptoShield introduces several significant features to make the product easy to install, configure, use and
troubleshoot.  These features include a two-digit numeric display, four standard LED status indicators and patented Intrusion Indicators
that identify where the safety zone is encroached without the need for an external computer display.

Because of the versatility of the OptoShield, the product can be used on both stationary and moving equipment.
Some applications for the OptoShield include the guarding of: robotic work cells, tube and pipe bending machines, rail-guided vehicles,
elevator platforms, stamping presses, shrink wrap machines, palletizing machines and transfer robots.

Safety Contact Strips. Safety contact strips are used in edges of guards, doors and gates at possible
pinch, crushing or shear points. The contact strips are pressure sensitive devices and operate similar to safety mats, and use an
appropriate controller. The system, comprised of the contact strips and controller are also third party certified to international standards
and carry the CE mark.

Optical Profiling Scanners. In today's industrial environment, non-contact, on-the-move sensing is vital to
control automated processes and improve industrial productivity. To meet this need, we have developed a line of optical profiling
scanner products. These scanners provide non-contact sensing for a variety of customer applications.

We manufacture a family of high speed, microprocessor-
based profiling scanners designed to provide an economical way to measure

We also manufacture and sell the Vehicle Scanner Series of
high speed, profiling scanners utilized in automated highway toll collection systems. These scanners are used for vehicle detection,
separation and classification, providing imaging information to a host computer, which determines the appropriate toll to be charged in
an automatic fare collection application. STI Vehicle Scanners have been selected or installed on a number of bridges and toll roads
both in the United States and internationally. Domestic locations include the Triborough and Verrazano Narrows bridges in New York, a
number of bridges in the San Francisco Bay Area, including the Golden Gate Bridge and the San Francisco-Oakland Bay Bridge, and
toll roads in Pennsylvania, Colorado, Florida, Maine, New Jersey and Kansas.  International locations include China, France, Belgium,
Singapore and Brazil.

Photoelectric and Fiberoptic Sensors. We manufacture and/or market a variety of photoelectric and
fiberoptic sensors used for detecting the presence or absence of objects in a wide range of factory automation applications.

Fiberoptic sensors utilize flexible glass or plastic fiberoptic cable to traverse the light beam from the solid state
light source to the receiving electronics. This cable is very small, and is resistant to high temperatures, corrosive chemicals or repeated
flexing. Fiberoptic sensors are often used in confined spaces and in environments in which standard photoelectric sensors typically
would not survive.

Machine Services Division.

To cover this diversified industrial market, we market these
products primarily to end-users and original equipment manufacturers through over 1,000 worldwide distributor locations.  STI Safety
Product Group distributors primarily fall into two categories, Automation Safety Partners ("ASP") and Automation Safety
Distributors ("ASD").   We created the ASP program to meet the rising expectations of our customers and the demands
required for STI to be a single source safety solution provider.  In order to become an ASP, an organization must commit to a number of
requirements, including an extensive training program for their STI product specialists, a newsletter program, demonstration equipment
and safety seminars for their local customers.  A smaller number of distributors that do not meet the requirements of the ASP program
are classified as ASDs and have a reduced discount structure for the purchase of STI products.

Automation Products Group

Level and Flow Sensors.

Non-contact Ultrasonic Sensors and Controllers

Pressure Transducers, Digital Pressure Gauges, Displacement and Velocity Transducers, and Pressure
Comparators.  These products are used in a variety of factory automation, aerospace, medical, semiconductor, oil and gas markets
and applications. During 2003, we consolidated the engineering, manufacturing, administration and sales operations of these
products into our facility in Logan, Utah. A small assembly operation in Tulare, California was relocated to Logan in the first quarter of
2005.  We have no further operations in Tulare.

Data Acquisition and Communication Equipment

Control Components, Power Monitoring and Defense Electronics. We manufacture and market a
variety of sensors and relays for commercial and defense customers. Such products include custom magnetic components, current
sensors, RPM sensors, voltage sensors, current monitors, time delay relays, flashers, phase sequence relays and indicators, DC to DC
converters, and isolation transformers. We market and sell these products directly to end customers or specialty resellers.

We are qualified as a supplier of a variety of military-specified
sensors and controls. Many of these products are selected for use on military and general aviation aircraft and ground support systems.
Products are sold to original equipment manufacturers, government agencies and end users.

Our mission to provide tailored solutions for measurement
applications is reflected in the structure, operations, and channels to market of our Automation Products Group. A traditional
geography-based sales channel, utilizing independent representative sales organizations was established in 2003 for this business unit.
The current market focus includes oil and gas exploration and production, aerospace industries, hydraulic equipment OEMs,
water/waste-water management and semiconductor manufacturing. In order to satisfy another important step in maximizing resource
utilization in our Automation Products Group, we focus our product development efforts in custom and modified products for specific
volume OEMs customers. This is in sharp contrast to a more traditional, capital intensive effort to cover every possible product
range.

Distribution of Third-Party Products

We also derive revenue from the distribution of products from third party manufacturers, including
revenues pursuant to our relationship with EJA Limited, a subsidiary of Rockwell International, and Nohken (See Business - Our
Products and Markets - Automation Products Group - Level and Flow Sensors), and others. In the event such arrangements are
terminated or third party products otherwise become unavailable, our results of operations could be adversely affected.

Sources and availability of components

We maintain an inventory of components and parts for
our manufacturing activities. Although there are many sources for most of the components needed, we purchase some products,
components and sub-assemblies from sole sources, which may be the only available supplier or may enable us to obtain pricing or
supply efficiencies. In the event of supply interruptions from these vendors, we believe that we could obtain most sole source
components from alternate suppliers; however, this would require us to transfer tooling or designs, or to redesign our products to
facilitate use of alternate source components. We could incur delays by switching to an alternate source, which could have an adverse
effect on our business, financial condition and results of operations.

Research and development

In order to meet the changing needs of our customers,
we engage in research and development both to introduce new products and to improve existing products. In addition, we modify
products as necessary to meet original equipment manufacturers' requirements. At December 31, 2005, there were approximately 27
employees engaged in research and development activities. See "Management's Discussion and Analysis of Financial Condition
and Results of Operations - "Risk Factors" - Technological Change and New Product Development."

In 2005, 2004, and 2003, we spent $4,089,000, $3,978,000, and
$4,355,000, respectively, on engineering, research and development. In addition to new products and enhancements to existing
products, our research and development efforts are directed towards qualifying our light curtains, scanners and sensors for sale in
foreign countries and qualifying products that we import for sale in the U.S. We anticipate that the level of research and development
expenditures in 2006 will be consistent with 2005.

Patents and trademarks

We hold sixteen United States patents issued, many
with associated foreign filings and patents, and ten US registered trademarks. In addition, we have been licensed by our parent
company to use seven US registered trademarks, including the use of its logo "STI". Scientific Technology, Scientific Technologies, the
STI logo, OptoSwitch, OptoData, OptoSafe and Fiberlens, are registered trademarks of our parent company. BeamSafe, DuoSafe,
FlexSafe, FastScan, QuadSafe, MegaSafe, MicroSafe, MiniProtect, MiniSafe, and OptoShield, are registered trademarks of ours. This
Annual Report on Form 10-K also refers to trademarks and service marks of other companies and entities.

We cannot assure you that these patents or trademarks or other
steps taken by us to protect our intellectual property will prove sufficient to prevent misappropriation of our technology.  Because of the
rapid rate of technology change in the electronics industry, we believe our success in the future depends on the quality of our products
and services and the technical skills of our personnel to adapt to technological developments, rather than solely on our patents.

Competition

The industry in which we operate is competitive and
subject to rapid technological change.  Many of our competitors are significantly larger and possess greater financial and other
resources.

Competitors of SPG product lines include, among others, Banner Engineering, Cutler Hammer, Danaher
Controls, Eaton Corporation, Honeywell, Keyence, Link Controls, Omron, Rockwell Automation, Sick Optic-Electronic, Inc. Competitors
of APG product lines include several of the above-mentioned firms and also Ashcroft, Celesco, Hi-G, Logitek, MSI, SCI Systems, Inc.,
Technitrol, Wika, and Xentek. Certain of our suppliers, including Rockwell/EJA, also compete with us. In addition, we face indirect
competition from present and potential end users who from time to time evaluate the "make or buy" decision of whether to manufacture
their own components or purchase them from outside sources.

Competition is based primarily upon product quality, performance and price. We believe that we generally
compete favorably with respect to these factors. To maintain our competitive position, we will continue to devote substantial resources
to the development of new products and improvements to current products. See "Business - Research and Development."

Foreign operations

We have no foreign manufacturing operations. We
have international sales offices in the United Kingdom, Japan, Singapore and China. We closed our European sales office in 2004. Our
products are also sold in foreign countries by distributors and independent sales representatives. Foreign sales represented 15% of
sales in 2005, 13% of sales in 2004 and 12% of sales in 2003. The Company's sales by geographic location of customers in 2005 were:
North America - $57,051,000, Asia - $2,630,000, Europe - $803,000, South America $ 354,000 and all others $320,000.

Customers

One customer, H.H. Barnum, an independent distributor, accounted for 11% of sales in
2005 and 10% of sales in 2004. No customer represented more than 10% of sales in 2004 or 2003. Aggregate sales to both
government agencies and government contractors represented less than 5% of sales in 2005, 2004 and 2003.

Costs and effects of compliance with environmental
laws

Compliance with environmental protection laws or similar ordinances is not expected to have any
material affect on our business.

Employees

At December 31, 2005, we employed approximately 321 full time employees. Included
in this total were the common administrative staff that we share with our parent and its other subsidiary at the Dumbarton Circle facility
in Fremont, California.

None of the employees are represented by unions, and there has never been a
disruption of operations due to a labor dispute.

Many of our employees are skilled in technical and engineering disciplines and our future success
will depend, in part, upon our ability to attract and retain such employees. We believe that relations with our employees are good.

Item 1A. Risk Factors

Because of the variety of factors and uncertainties affecting our operating results, past financial
performance and historical trends may not be a reliable indicator of future performance. These factors, as well as other factors affecting
our operating performance, may result in significant volatility in our common stock price. Among the factors which could affect our future
business, financial condition or operating results are the following:



Our operating results may fluctuate.

We have experienced fluctuations in annual and quarterly operating
results and anticipate that these fluctuations will continue, which may cause the trading price of our common stock to decline.  These
fluctuations are caused by a number of factors described below and elsewhere in this section, including:





















Our sales are dependent on independent distributors.

A majority of our sales are through third party distributors, system integrators and original equipment
manufacturers. These resellers are not required to offer our products exclusively. We cannot assure that a reseller will continue to offer
our products. In addition many of our resellers are privately owned firms which may not be well capitalized, as was demonstrated by the
failure of two of our distributors during 2001. If our ability to sell products through these third parties is impaired, our results of
operations would likely suffer.

The industrial manufacturing equipment industry, and the markets of
customers that use our products, are highly cyclical.

Our continued success depends in large part on the vibrancy of various industries that use our
products.  We operate in a cyclical industry that has been subject to significant economic downturns often in connection with, or
in anticipation of, declines in general economic conditions.  These types of downturns have occurred numerous times in the past,
most recently in 2001.  During such downturns, we experience reduced product demand, erosion of average selling prices and
gross margins. Our business could be harmed in the future by additional cyclical downturns in the industrial manufacturing
equipment industry or by slower growth by any of the markets served by our customers' products.

The markets in which we participate are intensely competitive.

Our core markets are intensely competitive. Many competitors have substantially greater name recognition
and technical, marketing, distribution and financial resources than we have, and we may not be able to compete successfully with them
in the future.  Competitive pressures could also reduce market acceptance of our products and result in price reductions, decreases in
revenues and increases in expenses.  Competition in our core markets is based primarily on performance, quality, price and availability.
If we do not compete successfully on these and other factors, our business, financial condition and operating results would be
harmed.

Average sales prices of our products generally decline over time.

Average sales prices in the industrial manufacturing equipment market tend to decline over time as a result
of competition, technological advances, manufacturing efficiencies and other factors.  Declines in average sales prices for our
products, if not offset by reductions in the cost of producing those products or by sales of new products with higher gross margins,
would decrease our gross margins, could cause a negative adjustment to the value of our inventories and could materially and
adversely affect our operating results.

We do not have long term contracts with our customers.

Our customers generally purchase our products on a purchase-order basis and do not have long-term
contracts with us.  As a result, we cannot be certain that our customers will continue to order products from us at the same or higher
levels as in the past.  The loss of one or more significant customers, or a decline in overall orders from our customers, would harm our
business and operating results.

In addition, the lack of long-term sales contracts and significant
order backlog makes it difficult for us to forecast future sales with certainty or to accurately forecast component and product
requirements. These factors expose us to a number of risks:

- if we overestimate our requirements we may be obligated to purchase more components or third-party
products than are required;
- if we underestimate our requirements, our suppliers may have an inadequate product or product
component inventory, which could interrupt manufacturing of our products and result in delays in shipments and revenues;
- we may also experience shortages of product components from time to time, which also could delay the
manufacturing of our products; and
- over or under production can lead to higher expenses, lower than anticipated revenues, and reduced
margins.

We may be unable to increase our international sales.

We have opened a sales office in China and have sales employees located in various foreign countries.
We are attempting to develop, integrate and expand our international distribution networks in an effort to increase international sales of
our products. We may not be successful in developing or expanding our international distribution network or in marketing and selling
products in foreign markets. If the revenues generated by our international sales are not adequate to recover the expense of
establishing, expanding, and maintaining an international distribution network, our business, financial condition, and results of
operations could be materially adversely affected. If international sales become a more significant component of net sales, our business
would be more vulnerable to risks inherent in doing business internationally, including:

- difficulties in managing foreign resellers;
- longer payment cycles and problems in collecting accounts receivable;
- the effects of seasonal customer demand;
- changes in regulatory requirements;
- difficulties in meeting the requirements of different international product regulations;
- risks relating to intellectual property rights;
- increased expenses due to efforts to localize our product offerings;
- export restrictions, tariffs and other trade barriers;
- fluctuations in currency exchange rates; and
- potentially adverse tax consequences and political instability.

The existence or occurrence of any one of these factors could have a material adverse effect on our business,
financial condition, and results of operations.

Our business could suffer if we experience delays or are unable to transition certain of our
products to conformance with new European hazardous substance regulations.

The legislative and commercial actions in Europe regarding
hazardous substances have brought a new level of environmental awareness to industrial equipment industries.  Certain of our
products that may fall within the scope of the Restriction on Hazardous Substances (RoHS) Directive may be required to conform to the
new emerging restrictions and conventions.  Delays or failure to transition current products to environmental compliance for the broad
range of countries where our products are deployed may negatively impact revenues. Further, many of our commercial parts suppliers
and contract manufacturers have begun or completed the conversion to meet this new emerging requirement.  Should these efforts be
delayed our supply chain of qualified components could prevent STI from meeting the deadline for compliance.  Also our cost to
become compliant could become more than currently projected, therefore negatively impacting our revenues and margin performance.

We may not be able to manufacture and deliver our products as
quickly as our customers require, which could cause us to lose sales and would harm our reputation.

We may not be able to manufacture products and deliver them to our customers at the times and in the
volumes they require. Manufacturing delays and interruptions can occur for many reasons, including, but not limited to:

- the failure of a supplier to deliver needed components on a timely basis or with acceptable
quality;
- lack of sufficient capacity;
- poor manufacturing yields;
- equipment failures;
- manufacturing personnel shortages;
- labor disputes;
- transportation disruptions;
- changes in import/export regulations;
- infrastructure failures at the facilities of our offshore contract manufacturer;
- natural disasters;
- acts of terrorism; and
- political instability.

Manufacturing certain of our products is complex.  The yield, or percentage of products manufactured that conform to required
specifications, can decrease for many reasons, including materials containing impurities, equipment not functioning in accordance with
requirements or human error.  If our yield is lower than we expect, we may not be able to deliver products on time which could result in
lost sales.  If we fail to manufacture and deliver products in a timely fashion, our reputation may be harmed, we may jeopardize existing
orders and lose potential future sales, and we may be forced to pay penalties to our customers.

We depend heavily upon suppliers and outsourced
manufacturers, several of which are located outside of the U.S.  Disruption of our access to these supplies and services, or problems
with the quality of supplies or services, could prevent us from filling customer orders and harm our business.

The principal components of our products are purchased from outside
vendors. We generally buy components under purchase orders, do not have long-term agreements with our suppliers, and we generally
do not maintain large inventories of components. Any termination of, or significant disruption of, our relationships with the suppliers of
our product components may prevent us from filling customer orders in a timely manner which could result in customer dissatisfaction
and lost sales.

For some of our products, including
private label products, we rely on third party manufacturers for subassembly of products and for final assembly, quality assurance, and
testing of some of our products. These outsourcing arrangements and any future outsourcing arrangements involve numerous risks,
including reduced control over product quality, delivery schedules, manufacturing yields, and costs.

For certain products that we private label, we are dependent on third party
suppliers.

We rely on third party suppliers for several finished products that we sell under the STI brand name.  If we
do not manage the relationship with the supplier properly or if the supplier stops providing us with these products, we may not be able
to find replacement products in a timely manner or at all.  This may prevent us from fulfilling customer orders and have an adverse
impact on our financial results.

Our business could suffer if we do not respond to technological change and new product development demands
of our customers.

The market for our products is characterized by changing technology,
evolving industry standards, changes in customer needs and new product introductions. Our future success will depend on our ability to
respond to emerging industry standards, hazardous material regulations, product disposal and recycling regulations, enhance current
products, develop new products, and achieve market acceptance of those products, all on a timely and cost-effective basis. The
introduction of new products also requires that we manage the transition from older products in order to minimize disruption of customer
orders, avoid excessive levels of older product inventories and ensure that adequate supplies of new products can be delivered to meet
customer demands.

Product errors or defects could result in product recalls and claims against us

We manufacture machine safety and automation sensing products, many of which are used in manufacturing,
construction and other industrial environments.  Errors or defects in our products could contribute to injuries, and could subject us to
product liability claims.  Any such claims would divert management's attention from our core business, would be expensive to defend,
and could result in sizeable damage awards against us. Our existing product liability insurance coverage may be inadequate to protect
us from any liabilities we might incur, and we may not be able to maintain this insurance or do so at a reasonable cost or on reasonable
terms. Any product liability claim brought against us, with or without merit, could also increase our product liability insurance rates or
prevent us from securing any coverage in the future. If a product liability claim or series of claims is brought against us for uninsured
liabilities or is in excess of our insurance coverage, our business would suffer. In addition, such claims may require us to recall some of
our products, which could result in significant costs to us.

An adverse evaluation of our internal controls over financial reporting could damage public perception of our
financial statements and cause our stock price to decline.

Pursuant to Section 404 of the Sarbanes-Oxley Act of 2002 (Section 404), beginning with our Annual
Report on Form 10-K for the fiscal year ending December 31, 2007, we will be required to furnish a report by our management on our
internal control over financial reporting. The report must contain a statement as to whether or not our internal controls over financial
reporting are effective. In addition, our independent auditors must attest to and report on management's assessment of such internal
controls.

We have begun to expend significant resources to perform the system and process documentation and
evaluation needed to comply with Section 404.  However, if we and our auditors are unable to adequately test our internal controls, or if
during this process we identify one or more significant deficiencies or material weaknesses in our internal controls over financial
reporting which we are unable to remedy prior to December 31, 2007, we may be unable to assert that our internal controls over
financial reporting are effective or our auditors may be unable to attest that our management's report is fairly stated.  In such case, we
could lose investor confidence in the accuracy and completeness of our financial reports, which could have an adverse effect on our
stock price.

During 2004 we identified certain internal control weaknesses related to: (1) inadequate preparation and
insufficient review and analysis of certain financial statement account reconciliations primarily relating to inventory and accounts
receivable valuation; (2) lack of documented policies and procedures related to changes and updates in the accounting system;
and (3) lack of sufficient personnel with appropriate qualifications and training in certain key accounting roles and adherence to
certain control disciplines within the accounting and financial reporting function.  Management believes these weaknesses have been
corrected in 2005.

Our business could suffer if we are unable to protect and enforce our intellectual property rights.

We rely on a combination of patent, trademark, trade secret laws and contractual restrictions to
establish and protect proprietary rights in our products and services. There can be no assurance that our patents, trademarks, or
contractual arrangements or other steps taken by us to protect our intellectual property will prove sufficient to prevent misappropriation
of our technology or defer independent third party development of similar technologies. Moreover, there can be no assurance that the
technology licenses granted to us from our parent company will continue to be available. The loss of any of our proprietary technology
could require us to obtain technology of lower quality or performance standards or at greater cost, which could materially adversely
affect our business, results of operations and financial condition. Also, competitors may develop their own intellectual property or
technologies, obtain their own patents, or challenge the validity of, or be able to design around, our patents. The laws of certain foreign
countries may not protect our products, services or intellectual property rights to the same extent as do the laws of the United States.

We may initiate claims or litigation against other third parties for infringement of proprietary
rights or to establish the validity of proprietary rights. Similarly, our competitors may initiate claims or litigation against us alleging
infringement of their proprietary rights or improper use of their intellectual property.  Litigation relating to intellectual property to which
we may become a party is subject to numerous risks and uncertainties, including the risk of counterclaims or other litigation against us,
and we may not be successful in any such litigation.

Our ability to develop and market our products is dependent
upon our retention of certain executive officers and other key personnel.

We are greatly dependent on the ability to retain key management
and technical personnel, and our future success is highly dependent upon the personal efforts of our management and technical
personnel. The loss of services of any one of them could have a material adverse effect on our business, financial condition, and results
of operations.  Our success will also be dependent in part upon our ability to attract, retain, and motivate highly skilled employees.  We
may need to offer additional compensation or incentives to attract and retain these and other employees.

Our operations have been and may continue to be
negatively impacted by uncertain global economic and political conditions.

Our business may suffer as a result of general economic and political conditions in the U.S. and abroad.  In
2003 and 2002, there was a rapid and severe downturn in the U.S. market and global economy.  This downturn has been compounded
by terrorist activity, such as the attacks in the U.S. on September 11, 2001, and the military activity in Afghanistan, Iraq and the Middle
East.  Additional terrorist acts or acts of war could cause damage or disruption to us or to our suppliers and our customers.  Fears of
global recession, war, and terrorism may continue to have seriously detrimental effects on the U.S. and global economies.  Such
conditions could further dampen consumer confidence and cause our customers to slow or cease spending on our products.  If these
events continue, our operations may be negatively impacted.

The seasonality inherent in our business could cause our operating results to fluctuate.

The industrial manufacturing equipment industry in which we compete has historically been
subject to seasonality. This is also true with respect to European markets in which we compete where business activity declines due to
vacations taken in the summer months. This seasonality, combined with other factors such as the variability in our operating results
described above, renders quarter-to-quarter comparisons of our results of operations unreliable as indicia of our overall
performance.

Our parent company has voting control over us.

Approximately eighty-six percent (86%) of our capital stock is currently held by our parent corporation,
Scientific Technology Incorporated, a California corporation. As a result, our parent has control over matters requiring approval by our
shareholders, including the election of directors and the approval of mergers or similar transactions, even if other shareholders
disagree.   This control, along with provisions of Oregon law affecting acquisitions and business combinations, may delay, deter or
prevent a third party from acquiring or merging with us and prevent shareholders from realizing a premium price for their shares
associated with an acquisition.   This voting control and provisions of Oregon law may also have a negative effect on the market price of
our common stock.

Item 1B. Unresolved Staff Comments

None

Item 2. PROPERTIES



We own no real estate and all of the following
buildings are leased.  Our manufacturing operations, corporate headquarters, administrative, engineering and sales offices are located
in a 95,700 square foot facility in Fremont, California; a small portion is occupied by our parent.  The facility is owned by an affiliate of
our parent.  The affiliate is owned by some of our major shareholders.

The Automation Products Group (APG) is located in a 25,000 square foot building in Logan, Utah.  This facility
is owned by an affiliate of our parent.  APG also leases, from a third party, a second facility in Logan, Utah, consisting of 6,000 square
feet.  APG had previously leased a 25,000 square foot facility in Tulare, California.  This lease expired in March, 2005.  A portion of the
operations that were located in this building were consolidated to Logan, Utah in 2004.  The remaining Tulare operations were
relocated to Logan in 2005, upon expiration of the lease.

STI Machine Services is located in an 8,585 square foot facility in Anaheim, California.  This facility is owned
by a former employee and previous owner of Dunn Sales, Inc.  The current lease will expire in June, 2006; however the owner has
agreed to extend the lease for another year with an option for a second year.

We are currently assessing our needs for additional space for our Anaheim, California operations;
otherwise, we believe that our current facilities are suitable to meet our operating needs.

See Note 12 of Notes to Consolidated Financial Statements
for information regarding lease commitments and Note 2 regarding related parties.

We maintain insurance policies for property, casualty, fire,
business interruption, workers compensation, general liability, product liability and directors' and officers' liability.  There can be no
assurance that in the future, we will continue to be able to obtain such insurance on commercially and economically feasible terms.  In
the event we were to suffer a claim not covered by insurance or if insurance coverage is insufficient, such claim could have an adverse
effect on our operations or financial condition.

Item 3. LEGAL PROCEEDINGS

From time to time, we are subject to various legal proceedings that arise in the ordinary course of our business. Although
we cannot predict the outcomes of these proceedings with certainty, our management does not believe that the disposition of these
matters will have a material adverse effect on our financial position, results of operations or cash flows.

Item 4. SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS

None.

PART II

Item 5. MARKET FOR REGISTRANT'S COMMON EQUITY, RELATED
 SHAREHOLDER MATTERS AND ISSUER PURCHASES OF EQUITY  SECURITIES

Market Information

Our Common Stock is traded on the NASDAQ
National Market under the symbol STIZ.  The stock tables in most daily newspapers list our Common Stock under
"SciTech".

Price of Common Stock

The table below represents the quarterly high and low closing prices in the NASDAQ
National Market.



|2005                                            | High                           | Low                            | 2004                                            | High                           | Low                           
|----------------------------------------------- | ------------------------------ | ------------------------------ | ----------------------------------------------- | ------------------------------ | ------------------------------
|1st Quarter
2nd Quarter
3rd Quarter
4th Quarter | $ 4.97
   3.86
   3.28
   4.50 | $ 3.75
   2.30
   2.68
   2.53 | 1st Quarter
2nd Quarter
3rd Quarter
4th Quarter | $ 6.40
   6.50
   5.75
   5.50 | $ 4.62
   5.14
   4.91
   4.06

The closing sales price of our Common Stock on March 16, 2006 was $8.42 per
share.

Holders

There were 758 shareholders of record on March 16, 2006.

Dividends

We did not declare or pay any cash dividends in
2003, 2004 or 2005. For the foreseeable future, we expect to retain earnings to finance the expansion and development of our
business.

Equity Compensation Plan

Please see Item 12 of this Annual Report on Form
10-K for disclosure relating to our equity compensation plans. Such information is incorporated by reference to our 2005 proxy
statement.

Item 6. SELECTED FINANCIAL DATA

i) FIVE YEAR CONSOLIDATED FINANCIAL DATA



| |  | Year Ended December 31, | 
| |  | ----------------------- | 

(In thousands except per share data)

|Statement of operations data           | 2005       | 2004 *       | 2003       | 2002       | 2001      
|-------------------------------------- | ---------- | ------------ | ---------- | ---------- | ----------
|Net sales                              | $61,158    | $58,425      | $55,494    | $51,207    | $49,053   
|Income (loss) from operations          | 3,150      | (7,858)      | 497        | 744        | (2,474)   
|Net income (loss)                      | 3,374      | (5,118)      | 428        | 472        | (1,425)   
|Basic income (loss) per common share   | $      .35 | $    (.53)   | $      .04 | $      .05 | $    (.15)
|Diluted income (loss) per common share | $      .35 | $    (.53)   | $      .04 | $      .05 | $    (.15)
|                                       |            |              |            |            |           
|                                       |            | December 31, |           
|Balance sheet data                     |            |              |            |            |           
|Cash and cash equivalents              | $  4,773   | $  1,107     | $  2,312   | $  2,620   | $  1,033  
|Total assets                           | 35,722     | 33,336       | 37,680     | 37,892     | 34,200    
|Shareholders' equity                   | 28,775     | 25,371       | 30,289     | 29,750     | 29,234    
|Dividends declared per share           | --         | --           | --         | --         | $     .11 

ii) QUARTERLY CONSOLIDATED FINANCIAL DATA (UNAUDITED)

(In thousands, except per share data)



|2005                                       | First     | Second   | Third      | Fourth    
|------------------------------------------ | --------- | -------- | ---------- | ----------
|                                           | Quarter   | Quarter  | Quarter    | Quarter   
|Sales                                      | $14,298   | $14,941  | $15,002    | $16,917   
|Gross profit                               | 5,478     | 6,170    | 6,417      | 7,396     
|Net income                                 | 20        | 510      | 1,660      | 1,184     
|Basic net income per common share          | $     .00 | $    .05 | $    .17   | $    .12  
|Diluted net income per common share        | $     .00 | $    .05 | $    .17   | $    .12  
|                                           |           |          |            |           
|2004                                       | First     | Second   | *Third     | *Fourth   
|                                           | Quarter   | Quarter  | Quarter    | Quarter   
|Sales                                      | $14,634   | $15,637  | $14,604    | $13,550   
|Gross profit                               | 6,068     | 6,433    | 4,701      | 645       
|Net income (loss)                          | 324       | 583      | (1,193)    | (4,832)   
|Basic net income (loss) per common share   | $     .03 | $    .06 | $    (.12) | $    (.50)
|Diluted net income (loss) per common share | $     .03 | $    .06 | $    (.12) | $    (.50)



* During the third and fourth quarters of 2004, we recorded
intangible impairment charges of $2.0 million and $4.8 million. (See Note 4 of Notes to Consolidated Financial Statements of this report
on Form 10-K)

Item 7. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL
  CONDITION AND RESULTS OF OPERATIONS

The following discussion and analysis of our financial condition and results of operations should
be read in conjunction with our consolidated financial statements and related notes included elsewhere in this Annual Report on Form
10-K. This discussion contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section
21E of the Securities Exchange Act of 1934 that are based on our management's beliefs and assumptions and on information currently
available to our management. Forward-looking statements include, but are not limited to statements regarding:

- Future results of operations, including statements regarding sales mix, cost of sales, investment in research
and development activities, promotion of our products, trends in our operating expenses and provision for income taxes;
- Business strategies, including expansion into new products, categories or countries;
- Financing plans, including the adequacy of financial resources to meet future needs;
- Industry environment, including relationships with significant customers and suppliers; and
- The impact on our business and financial results of past and future acquisitions.
- We frequently identify our forward-looking statements by the use of words such as "may,"
"will," "should," " potential," "continue," " expects," "anticipates,"
"intends," "plans," " believes," and "estimates".
- Forward-looking statements involve many risks, uncertainties and assumptions. Actual results may differ
materially from those expressed in the forward-looking statements for a number of reasons, including those appearing under the
caption "Risk Factors" and elsewhere in this Annual Report on Form 10-K. Except as required by law we undertake no
obligation to update or revise any forward-looking statements after the date of this report.3

Critical Accounting Policies

Revenue Recognition

The Company has product and services sales. During the years ended December 31, 2005
and 2004, product and services sales represented 93% and 7% of sales and 92% and 8% of sales,
respectively. The Company has sales to OEMs and distributors. During the years ended December 31, 2005 and 2004, $44.1 million, or
72% of sales and $41.1 million or 70% of our sales were sold to distributors, respectively.

Revenue from product sales to OEMs and distributors is recognized upon shipment when shipped FOB our
plant, or upon receipt by the customer when shipped FOB destination, a signed purchase order exists, the price is fixed or
determinable, collection of the resulting receivable is considered reasonably assured and product returns can be reasonably estimated.
Subsequent to the sale of the products we have no obligation to provide any modification or customization, upgrades, enhancements or
post contract customer support.

Our agreements with our distributors include certain product
rotation, price protection, and warranty rights. All distributors have the right to rotate slow moving products four times each fiscal year.
The maximum dollar value of inventory eligible for rotation is equal to eight percent of our products purchased by the distributor during
the previous fiscal year.  In order to take advantage of their product rotation rights, the distributors must order and take delivery of
additional products equal to at least the dollar value of the products that they want to rotate. Reserves for the right of return and
restocking are established based on the requirements of Statement of Financial Accounting Standards ("SFAS") 48,
Revenue Recognition when Right of Return Exists because we have visibility into our distributor's inventory and have sufficient
history to estimate returns. We record a reserve based on historical trends. Stock rotation and returns estimates are recorded as
reductions of sales and cost of sales.

Each distributor is also allowed certain rebates and price
protection rights. If and when we reduce or plan to reduce the price of any of our products and the distributor is holding any of the
affected products in inventory, we will credit the distributor the difference in price when it places its next order with us. We record an
allowance for price protection reducing our net sales and increasing our accrued liabilities based on specific terms and historical trends.
Price protection estimates are recorded as reductions of sales and warranty estimates are recorded against cost of sales.

The company provides a warranty to its customers for a period of 12 to 18 months. Upon revenue recognition,
we provide for the estimated costs that may be incurred for product warranties. We estimate sales returns and warranty costs based on
historical experience and the best information we have at the time we report our financial statements. Actual results could differ from
these estimates. Warranty expenses are recorded against cost of sales.

Installation and engineering service revenue is recognized when
services are rendered, or when an identifiable portion of the contract is completed, no significant post-delivery obligations exist and
collection of the resulting receivable is considered reasonably assured.  Customer acceptance is required for revenue recognition of the
service revenue. Service revenue was $4.4 million for the years ended December 31, 2005 and 2004 and $4.3 million for December 31,
2003..

Allowance for Doubtful Accounts

We maintain allowances for estimated losses from the inability of our customers to make required
payments. We perform ongoing credit evaluations of our customers and adjust credit limits based upon payment history and the
customer's current credit worthiness, as determined by our review of their current credit information. We continuously monitor
collections and payments from our customers and maintain a provision for estimated credit losses based upon our historical experience
and any specific customer collection issues that we have identified. While such credit losses have historically been within our
expectations and the provisions established, we cannot guarantee that we will continue to experience the same credit loss rates that we
had in the past. A significant change in the liquidity or financial position of any one of our customers could have an adverse impact on
the collectability of our accounts receivable and our future operating results. An account is written off or written down to its net
realizable value, when we determine it is in bankruptcy, liquidation or cannot be located or the cost of collection exceeds the realizable
value of the account.

Inventory Valuation

We value our inventory at the lower of the actual cost to purchase and/or manufacture the inventory or
the current estimated market value of the inventory. Cost is  computed using standard costs, which approximates actual cost, on a first-
in-first-out basis. We regularly review inventory quantities on hand and may write-down excess and obsolete inventory based primarily
on our historical consumption and our estimated forecast of product demand and production requirements. Demand for our products
can fluctuate significantly. In addition, our industry is characterized by technological change, new product development, and product
obsolescence that could result in increased obsolete inventory on hand. Our estimates of future product demand may differ from actual
results, in which case we may adjust the provision required for excess and obsolete inventory. In the future, if our inventory is
determined to be overvalued, we would be required to recognize such reduced value in our cost of goods sold at the time of such
determination. Likewise, if our inventory is determined to be undervalued, we may have over-reported our costs of goods sold in
previous periods and will not recognize such additional operating income until the time of sale. Therefore, although we make every
effort to ensure the accuracy of our forecasts of future product demand, any significant unanticipated changes in demand or
technological developments could have a significant impact on the value of our inventory and our reported operating results.

Valuation of Goodwill and Other Long-Lived Assets

We review the recoverability of our long-lived assets, such as fixed assets, goodwill, intangible
assets and investments, when events or changes in circumstances indicate that the carrying amount of the asset or asset group may
not be recoverable. The assessment of possible impairment is based on our ability to recover the carrying value of the asset or asset
group from the expected future pre-tax cash flows (undiscounted and without interest charges) of the related operations. We believe we
have separate asset groups for PSI-Tronix, Machine Services Division and Lundahl.  These three groups are parts of the APG and
Safety Products Groups.  If these cash flows are less than the carrying value of such asset, an impairment loss is recognized for the
difference between the estimated fair value and carrying value. The measurement of impairment requires management to estimate
future cash flows and the fair value of long-lived assets. In addition, we review the valuation of goodwill at least annually.

During 2004, we reviewed the financial forecasts and 2005 budgets for MSD, Lundahl
Instruments and PSI-Tronix. Due to reduced revenue and margin levels, we determined that approximately $3.4 million of the book
value of the MSD intangibles was not recoverable and recorded an impairment charge for this amount to reduce the MSD intangibles to
their fair value. Based on a review of the expected cash flow versus the current book value of the assets related to the Lundahl
acquisition, we determined that an impairment charge for the Lundahl reporting unit was not necessary.  Based on our review of the
cash flows related to the PSI-Tronix acquisition, we determined that a significant portion of these intangible assets was not recoverable
and determined that an impairment charge of $3.4 million was required.  We believe that while the technology, customer lists, and
product lines still have value, the prolonged downturn in the semiconductor market for our products made it unlikely that we would
recover the book value of the assets. Of the $6.8 million of 2004 impairment charges, $4.2 million was recorded in cost of sales and
$2.6 million was recorded as a change to selling, general and administrative expense. During 2005, we reviewed the financial forecasts
and 2006 budgets for MSD, Lundahl Instruments and PSI-Tronix, and determined that no impairment charges were necessary.

Results of Operations

Scientific Technologies Incorporated designs, manufactures and distributes electrical and
electronic industrial controls such as machine safety and automation sensing products. Our product lines include safety light curtains,
safety interlock switches, safety relays, profiling scanners, safety scanners, factory automation sensors, controls, fiber optics, power
monitoring, safety mats, safety contact strips, non-contact ultrasonic sensors and controllers, pressure transducers and other electronic
equipment supplied to industrial automation, commercial and defense customers.

We are organized into two product groups, Safety Products and Automation Products, within two business
segments. The two units maintain separate operating facilities, engineering and support organizations, which help provide more
customer-centralized sales, product knowledge and application expertise directed at the unique needs of these focused markets.  We
believe this organizational structure allows us to better target our products based on each group's area of specialization, customer-
focused applications and products.

The Safety Products Group is influenced by separate, but related market forces:  the demand for increased
factory automation and the need for workplace safety.  The market pressures of workplace safety include financial issues, such as
workers' compensation and product liability insurance expenses as well as the safety regulatory forces of OSHA, local health and safety
codes and international safety standards experienced by global customers.  During 2005 and 2004, we experienced a positive influence
by these market forces, as the safety market experienced overall growth.  However, we have also experienced an increased number of
companies entering the machine safety market, making for a more competitive market environment.

Our Automation Products Group provides tailored measurement, instrumentation and sensing solutions for
a range of industrial markets.  With the increasing price of oil experienced during the past several years, and the prospects for
continued oil demand strong, the oil and gas markets, specifically the exploration and production sector, has become a primary market
for APG during this past year.  The group is also focused on the water and wastewater market, with its maturing infrastructure as a
sector that may create future opportunities for our pressure, level and instrumentation products.  However, the semiconductor
equipment sector has declined this past year as a market for our pressure sensors.

The table below summarizes operating costs and expenses as a percentage of sales for the most recent three years.



|                                     | 2005 | 2004 | 2003
|------------------------------------ | ---- | ---- | ----
|Sales                                | 100% | 100% | 100%
|Gross margin                         | 42   | 31   | 42  
|Operating expenses:                  |      |      |     
|Selling, general and administrative  | 29   | 36   | 32  
|Research and development             | 7    | 7    | 8   
|Amortization of intangibles          | --   | 1    | 1   
|Total operating expenses             | 36   | 44   | 41  
|Income (loss) from operations        | 6    | (13) | 1   
|Interest and other income, net       | 1    | --   | --  
|Income (loss) before taxes           | 7    | (13) | 1   
|Provision (benefit) for income taxes | 1    | (4)  | --  
|Net income (loss)                    | 6%   | (9)% | 1%  

Sales

The Company is organized into two product groups - the Safety Products Group ("SPG") and the
Automation Products Group ("APG"). Group sales for the years ended December 31, 2005, 2004 and 2003 were (in thousands):



|              | 2005                    | %           | 2004                    | %           | 2003                    | %          
|------------- | ----------------------- | ----------- | ----------------------- | ----------- | ----------------------- | -----------
|SPG
APG
TOTAL | $ 52,141
$9,017
$61,158 | 85%15%
100% | $ 49,041
$9,384
$58,425 | 84%16%
100% | $ 46,708
$8,786
$55,624 | 84%16%
100%

Sales in 2005 increased 5% to $61.1 million from $58.4 million in 2004. Sales by SPG increased $3.1 million or
6% from 2004 to 2005. This was primarily the result of increased unit sales at the Optical Sensor Division, the largest division of the
Safety Products Group. Shipments of safety light curtains, interlocks and safety mats grew by 8%, 12%, and 11%, respectively,
offsetting a 30% decline in sales of sensor and profiling scanner products. During 2005, APG sales decreased 4% to $9.0 million,
primarily due to a 27% decrease in sales of pressure products partially offset by a 27% increase in sales of level products and to a
lesser extent a 4% increase in sales of products which we purchase from others.

Sales in 2004 increased 5% to $58.4 million from $55.2 million in 2003. Sales by SPG increased $2.4 million or
5% from 2003 to 2004. This was primarily the result of increased unit sales at the Optical Sensor Division. Shipments of safety light
curtains, interlocks and safety mats grew by 7%, 10%, and 19%, respectively, offsetting a 27% decline in sales of vehicle scanners.
During 2004, APG sales increased 7% to $9.4 million, primarily due to increased sales of level sensing products that offset declines of
4% and 5% in sales of ultrasonic and pressure products, respectively.

Gross profit

2005 = $25.5 million
                  2004 = $17.8 million
                  2003 = $23.0 million
                  Increase in 2005 = 43%
                  Decrease in 2004 = 23%

Our gross profit increased 43% to $25.5 million in 2005 from $17.8 million in 2004. During 2004 we incurred
certain non-recurring intangible asset impairment charges totaling $4,200,000 in cost of sales. The 2005 increase reflects this charge
along with increased sales at our Optical Sensor Division and a more profitable sales mix at our Machine Services Division and APG.
APG also benefited from the completion of the relocation of our Tulare facilities to Logan Utah in the first quarter of 2005, which
reduced manufacturing costs.  See Note 4 in Notes to Consolidated Financial Statements.

Our gross profit decreased 23% to $17.8 million in 2004 from $23.0 million in 2003. This decrease reflected a
decline in our gross margin to 31% of sales in 2004 compared to 42% of sales in 2003. This was primarily the result of non-recurring
impairment charges relating to technology and product lines associated with our acquisitions of Dunn Sales and PSI-Tronix which
reduced our gross profit by $4.2 million. In addition, both SPG and APG experienced a shift in the mix of products sold to those bearing
a higher relative cost and were impacted by changes made to our inventory reserves. See Note 4 in Notes to Consolidated Financial
Statements.

Selling, general and administrative expenses

2005 = $18.2 million
                  2004 = $21.1 million
                  2003 = $17.5 million
                  Decrease in 2005 = 14%
                  Increase in 2004 = 17%

Selling general and administrative expenses in 2005 decreased $2.9 million or 14% in 2005 compared
to 2004. This was primarily the result of non-recurring intangible impairment charges and the accrual in 2004 for the settlement of a
commission lawsuit..

Selling, general and administrative expenses increased by $3.6 million or 21% in 2004 compared to 2003. The
increase was primarily due to impairment charges of $2.6 million relating to customer lists and trade names associated with our
acquisitions of Dunn Sales and PSI-Tronix and a $600,000 settlement of a commission lawsuit with a former sales representative
organization. Selling, general and administrative expenses were 29% of sales in 2005, 36% of sales in 2004 and 32% of sales in 2003.

Research and development expenses

2005 = $4.1 million
                  2004 = $4.0 million
                  2003 = $4.4 million
                  Increase in 2005 = 3%
                  Decrease in 2004 = 9%

Product creation, development and enhancement have always been and continue to be an important factor in
our long-term success. Investments in this area enable us to serve the factory automation market with increasingly sophisticated
sensors and manufacturing control products.

During 2005, we increased our engineering expenses slightly. Increased staffing levels and higher
consulting and outside service costs were partially offset by lower materials usage and support expenses.

As a result of the lowering of our reliance on outside contractors by approximately $101,000, a reduction of
personnel costs of approximately $146,000 and lower material costs of approximately $138,000, we were able to reduce our research
and development expenditures by 9% from 2003 to 2004.

In 2005, 2004 and 2003, we introduced a number of new products and product enhancements. Consistent with
our dedication to the development of new products, we anticipate that the level of research and development expenses will remain
constant in 2006. To date, all product development costs have been expensed as incurred.

Income Taxes

During the third quarter, we reached an agreement with the
Internal Revenue Service which allowed us to file amended federal and state income tax returns for the years ended December 31,
1999, 2000, 2001, 2002 and 2003 which allowed us to realize additional income tax credits and record a tax benefit for the year ended
December 31, 2005. The effective tax rate the fiscal year 2005 was 9%.

As a result of the losses sustained in 2004, we recorded an income tax benefit of 33% of the loss for the year.
Our effective income tax rate was 38% in 2004 and 2003. We expect that our effective tax rate for 2006 will be reasonably consistent
with 2005, which excluding the benefit mentioned above, was 32%. See Notes 1 and 5 of Notes to Consolidated Financial
Statements.

Management periodically reviews the Company's deferred tax assets for recovery in future years.  At
December, 31 2005 and 2004 management considers deferred tax assets to be fully realizable based on projections of future taxable
income deemed to be more likely than not.

Restatements

As described in Footnote 1 to our Consolidated Financial
Statements, we have restated our December 31, 2004 Consolidated Balance Sheet by reclassifying two items. In the first item,
adjustable rate short-term investments ("auction rate securities") of $2.35 million have been restated from cash and cash
equivalents to short-term investments. In the second item, current deferred tax assets of $1.83 million have been restated to long term
deferred tax assets. As a result, we have also restated our Consolidated Statement of Cash Flows for 2004, which resulted in certain
reclassifications between operating and investing cash flows. These restatements have no effect on our results of operations.

Liquidity and Capital Resources

During 2005, cash flows from operating activities amounted to $5.3 million. These cash flows were
provided by net income, depreciation and amortization, deferred income taxes, lower receivable from Parent and decreased inventories,
and were used to offset increased accounts receivable and other assets, reduced accounts payable and accrued expenses to purchase
fixed assets and to reduce our capital lease obligation. Working capital amounted to $21.2 million at December 31, 2005, a 10%
increase from $19.2 million at December 31, 2004. Our bank line of credit of $6.0 million was renewed in 2005 and extended to June
30, 2006. We have an option to convert up to $1.0 million of the credit line into a five-year term note. Secured by qualified receivables,
fixed assets and inventories, borrowings under this credit line bear interest at the bank's prime rate. At December 31, 2005, none of the
line of credit had been utilized.

The payment of the $600,000 commission lawsuit settlement (accrued in 2004) was made in the first quarter of
2005. This resulted in a decrease in accrued expenses in 2005.

We made certain capital expenditures during 2005, primarily for production, quality assurance, research and
development equipment, information systems and software.

Consistent with our historical operations and our current plans for growth, we plan to make additional capital
expenditures during 2006, primarily for production, quality assurance and research and development equipment. While we had no
formal commitments at December 31, 2005, it is anticipated that capital expenditures in 2006 will be in excess of $1.0 million,
predicated on our profitability and cash resources.

We believe that cash flow from operations and available bank borrowings
will be sufficient to meet anticipated working capital requirements through at least 2006. While we continue to evaluate financing
alternatives from time to time, we have no current plans to raise additional outside capital. We plan to continue to renew out bank line of
credit in 2006. At December 31, 2005, future minimum payments under our leases were as follows.

|                            | Payments Due by Period
|--------------------------- | ----------------------
|                            | Less Than One Year    
|Operating Lease Obligations | $1,220,000            
|Capital Lease Obligations   | $    68,000           

Relationship with Parent and Other Related Parties

In 2005, 2004, and 2003 the Company provided certain
management services to the Parent. Costs of these services were allocated to the Parent based upon the amount of time employees
spent providing these services. The amount charged to the Parent was $298,000 for 2005, $327,000 for 2004, and $353,000 for
2003.

The Company leases approximately 85,000 square feet in a 95,700 square foot facility in Fremont, CA, owned
by Ardenwood, LLC, an affiliate of the Parent. The Company also leases another 25,000 square feet in another facility in Logan, CA
owned by the same affiliate. The lease terms are for five and ten years, respectively. Overhead costs are allocated primarily on the
basis of square footage utilized. See Commitments and Contingencies at Note 12.

STI Machine Services is located in an 8,585 square foot facility in Anaheim, California.  This facility is
owned by a former employee and previous owner of STI Machines Services (Dunn Sales, Inc.).  The current lease will expire in June,
2006; however the owner has agreed to extend the lease for another year with an option for a second year.  See Commitments and
Contingencies at Note 12.

The Company utilizes a receivable from/payable to Parent account to record activity including cash
received, cash disbursed and amounts owed to and receivable from the Parent for allocated charges and dividends. The Parent files a
consolidated tax return including the Company's accounts. The tax provision or benefit is calculated on a stand-alone basis, but
includes the Company's intercompany tax sharing arrangement. The net effect of transactions with the Parent resulted in a receivable
from Parent of $228,000 at December 31, 2005 and $941,000 at December 31, 2004. The decrease was due to research and
development tax refunds received in 2005.

In addition, the Company is party to a capital lease of $96,000 at December 31, 2005 under which the Parent is
the lessor. At December 31, 2005, future minimum payments under this lease due in the years 2006 and 2007 were approximately
$68,000 and $28,000 respectively. Collectability of the receivable from Parent is assured because the Parent has its own source of
cash flow and it has $1.3 million in cash at December 31, 2005.

Aurora Technology Pte. Ltd., a supplier of parts and services to the
Company, is also the Company's 50% owned joint venture. During 2005, 2004, and 2003 the Company paid Aurora approximately
$6,749,000, $6,311,000, and $4,973,000, respectively for products. The carrying value of our investment in Aurora, which is accounted
for using the equity method, amounted to approximately $713,000 and $550,000 as of December 31, 2005 and 2004.

Management has determined that Scientific Technology Inc. (Parent), Ardenwood, LLC, and Aurora Technology
are not variable interest entities because the Company does not absorb a majority of their expected losses or expected returns.

Acceleration of Stock Option Vesting

On December 22, 2005, the board of directors approved the acceleration of vesting of all unvested
options to purchase 9,750 shares of the Company's common stock that are held by employees and consultants, including outside
directors, which had an exercise price per share greater than or equal to $4.22. The weighted average exercise price of options
accelerated was $5.17. Under FAS 123R, the acceleration of these options will allow the Company to avoid the recognition of
approximately $16,386 in share-based compensation expense in 2006.

Item 7A. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK.

The market risk inherent in our investments represents the potential loss arising from adverse
changes in interest rates.  We are exposed to market risk in the area of interest rate changes impacting the fair value of our investment
securities.  Our policy is to invest primarily in money market accounts and short-term investments held at financial institutions. We do
not have any derivative instruments in our investment portfolio. Due to their highly liquid nature, our investments are subject to minimal
credit and market risk.

While the majority of our sales are in US dollars, there are some sales in foreign currency. There is minimal
foreign currency exchange risk.

Item 8. FINANCIAL STATEMENTS AND SUPPLEMENTARY
DATA.

The following documents are filed as a part of this Report:

(1) Financial Statements



|                                                                                                     | Page
|---------------------------------------------------------------------------------------------------- | ----
|Report of Registered Public Accounting Firm - BDO Seidman, LLP                                       | 29  
|Report of Registered Public Accounting Firm - PricewaterhouseCoopers, LLP                            | 30  
|Consolidated Balance Sheets - December 31, 2005 and 2004                                             | 31  
|Consolidated Statement of Operations - Years ended
  
    December 31, 2005, 2004 and 2003           | 32  
|Consolidated Statement of Cash Flows - Years ended
  
    December 31, 2005, 2004 and 2003           | 33  
|Consolidated Statement of Stockholders' Equity - Years
  
    ended December 31, 2005, 2004 and 2003 | 34  
|Notes to Consolidated Financial Statements                                                           | 35  

(2) Financial Statement Schedules

Financial Statement Schedules have been omitted because
they are not required or applicable, or the information required to be set forth therein is included in the Financial Statements or notes
thereto.

---





Report of Independent Registered Public Accounting Firm

Board of Directors
   Scientific Technologies Incorporated
   Fremont, CA

We have audited the accompanying consolidated balance sheets of Scientific Technologies Incorporated as of
December 31, 2005 and 2004, as restated, and the related consolidated statements of operations, shareholders' equity and cash flows,
as restated, for the years then ended. These financial statements are the responsibility of the Company's management. Our
responsibility is to express an opinion on these financial statements based on our audits.

We conducted our audits in accordance with the standards of the
Public Company Accounting Oversight Board of the United States of America.  Those standards require that we plan and perform the
audits to obtain reasonable assurance about whether the financial statements are free of material misstatement.  The Company is not
required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. Our audits included
consideration of internal control over financial reporting as a basis for designing audit procedures that are appropriate in the
circumstances, but not for the purpose of expressing an opinion on the effectiveness of the Company's internal control over financial
reporting. Accordingly, we express no such opinion.  An audit also includes examining, on a test basis, evidence supporting the
amounts and disclosures in the financial statements, assessing the accounting principles used and significant estimates made by
management, as well as evaluating the overall financial statement presentation.  We believe that our audits provide a reasonable basis
for our opinion.

In our opinion, the consolidated financial statements referred to
above present fairly, in all material respects, the financial position of Scientific Technologies Incorporated (a subsidiary of Scientific
Technology Incorporated) as of December 31, 2005 and 2004, and the results of its operations and its cash flows for the years then
ended, in conformity with accounting principles generally accepted in the United States of America.

As seen in Note 1, the Company restated certain amounts in the December 31, 2004 Consolidated Balance
Sheet and the 2004 Statement of Cash Flow.

BDO Seidman, LLP
   San Francisco, California

  March 17, 2006

---





Report of Independent Registered Public Accounting Firm

To the Board of Directors and Shareholders of
   Scientific Technologies Incorporated

In our opinion, the accompanying consolidated statements of operations, shareholders' equity and cash flows

PricewaterhouseCoopers LLP

San Jose, California
   March 15, 2004

---



Scientific Technologies Incorporated

                            Consolidated Balance Sheet
(In thousands, except per share data)

`December 31,
                                                           --------------------------
                                                               2005          2004
                                                           ------------  ------------
                                                                         (as restated) 
Assets                                                                               
Current assets:
    Cash and cash equivalents............................ $      4,773  $      1,107
    Short-term investments...............................        2,480         2,350
    Accounts receivable, net of allowance of $159
          and $331.......................................        9,085         7,746
    Receivable from Parent...............................          228           941
    Inventories..........................................        8,414        10,584
    Deferred income taxes - current......................        1,772         1,996
    Prepaid expenses and other assets....................          640           394
                                                           ------------  ------------
          Total current assets...........................       27,392        25,118

Property and equipment, net..............................        3,224         3,470
Deferred income taxes - long-term........................        2,341         1,830
Investments and other non-current assets.................          785           605
Goodwill.................................................          216           216
Other intangible assets, net.............................        1,764         2,097
                                                           ------------  ------------
          Total assets................................... $     35,722  $     33,336
                                                           ============  ============
                                                                                     
Liabilities and Shareholders' Equity                                                 
Current liabilities
    Bank overdrafts...................................... $         --  $        517
    Accounts payable.....................................        2,481         3,246
    Accrued expenses.....................................        1,185         1,711
    Accrued compensation.................................        2,477         2,209
    Current portion of capital lease with Parent.........           68            68
                                                           ------------  ------------
          Total current liabilities......................        6,211         7,751

Capital lease with Parent................................           28            96
Deferred income taxes ...................................          708           118
                                                           ------------  ------------
          Total liabilities..............................        6,947         7,965
                                                           ------------  ------------
Commitments and contingencies (Note 12)

Shareholders' equity:
    Common stock; $.001 par value; 100,000
       shares authorized; shares issued and
       outstanding - 9,786 and 9,764.....................           10            10
    Capital in excess of par value.......................        6,022         5,992
    Retained earnings....................................       22,743        19,369
                                                           ------------  ------------
          Total shareholders' equity.....................       28,775        25,371
                                                           ------------  ------------
          Total liabilities and shareholders' equity..... $     35,722  $     33,336
                                                           ============  ============`

The accompanying notes are an integral part of these financial statements.

---



Scientific Technologies Incorporated

                      Consolidated Statements of Operations
(In thousands, except per share data)

`Year Ended December 31,
                                                     ----------------------------
                                                       2005      2004      2003
                                                     --------  --------  --------
Sales.............................................. $ 61,158  $ 58,425  $ 55,494
Cost of goods sold.................................   35,697    40,578    32,462
                                                     --------  --------  --------
  Gross profit.....................................   25,461    17,847    23,032
                                                     --------  --------  --------

Operating expenses:
  Selling, general and administrative..............   18,091    21,116    17,504
  Research and development.........................    4,089     3,978     4,355
  Amortization of acquired intangibles.............      131       611       676
                                                     --------  --------  --------
   Total operating expenses........................   22,311    25,705    22,535
                                                     --------  --------  --------
Income (loss) from operations......................    3,150    (7,858)      497

Interest and other income, net.....................      544       216       193
                                                     --------  --------  --------

Income (loss) before income taxes..................    3,694    (7,642)      690
Provision (benefit) for income taxes...............      320    (2,524)      262
                                                     --------  --------  --------

Net income (loss).................................. $  3,374  $ (5,118) $    428
                                                     ========  ========  ========

Basic net income (loss) per share.................. $   0.35  $  (0.53) $   0.04
                                                     ========  ========  ========

Diluted net income (loss) per share................ $   0.35  $  (0.53) $   0.04
                                                     ========  ========  ========

Weighted average shares used to compute
    basic net income (loss) per share..............    9,773     9,741     9,711
                                                     ========  ========  ========

Weighted average shares used to compute
    diluted net income (loss) per share............    9,775     9,741     9,734
                                                     ========  ========  ========`

The accompanying notes are an integral part of these financial statements.

---



Scientific Technologies Incorporated

                   Consolidated Statement of Cash Flows
(In thousands)

`Year Ended December 31,
                                                        ----------------------------------
                                                           2005        2004        2003
                                                        ----------  ----------  ----------
                                                                   (as restated)
Cash flows from operating activities:
  Net income (loss)................................... $    3,374  $   (5,118) $      428
  Adjustments to reconcile net income (loss) to
    cash provided by operating activities:
    Provision for doubtful accounts...................       (172)       (215)         80
    Depreciation and amortization.....................      1,548       2,615       2,692
    Deferred income taxes.............................        303      (2,827)       (565)
    Impairment of intangible assets...................         --       6,816          --
    Loss on sale of property and equipment............         12          15          --
    Warranty reserve..................................        201         234         163
    Changes in assets and liabilities:
       Accounts receivable, net.......................     (1,167)        608        (583)
       Receivable from Parent.........................        713        (103)       (454)
       Inventories....................................      2,170      (1,303)       (562)
       Other assets...................................       (425)         35        (199)
       Accounts payable...............................       (765)        488        (184)
       Accrued expenses...............................       (460)        419         268
                                                        ----------  ----------  ----------
Cash flows provided by operating activities...........      5,332       1,664       1,084
                                                        ----------  ----------  ----------
Cash flows from investing activities:
   Proceeds from sale of short term investments.......        450          --          --
   Purchase of short term investments.................       (580)     (2,350)         --
   Purchases of property  and equipment...............     (1,002)     (1,197)     (1,435)
   Proceeds from sale of property  and equipment......         21          29          --
                                                        ----------  ----------  ----------
Cash flows used in investing activities...............     (1,111)     (3,518)     (1,435)
                                                        ----------  ----------  ----------

Cash flows from financing activities:
   Issuance of common stock, net......................         30         200         111
   Decrease in Bank Overdraft.........................       (517)        517          --
   Payment of capital lease obligation ...............        (68)        (68)        (68)
                                                        ----------  ----------  ----------
Cash flows provided by (used in) financing activities.       (555)        649          43
                                                        ----------  ----------  ----------
Change in cash and cash equivalents...................      3,666      (1,205)       (308)
Cash and cash equivalents at beginning of year........      1,107       2,312       2,620
                                                        ----------  ----------  ----------
Cash and cash equivalents at end of year.............. $    4,773  $    1,107  $    2,312
                                                        ==========  ==========  ==========

Supplemental disclosure of cash flow information:
   Cash paid to (received from) Parent for
      income taxes.................................... $      320  $      728  $      262
                                                        ==========  ==========  ==========

Supplemental disclosure of non-cash activities:
   Capital lease with Parent.......................... $       96  $      164  $      232
                                                        ==========  ==========  ==========`

The accompanying notes are an integral part of these financial statements.

---

Scientific Technologies Incorporated

              Consolidated Statement of Shareholders' Equity
(In thousands)

`Common Stock
                                ---------------------------
                                                   Capital
                                                  in Excess
                                           Par     of Par    Retained
                                Shares    Value     Value    Earnings    Total
                                -------  -------  ---------  ---------  --------
Balances December 31, 2002.....  9,687  $    10  $   5,681  $  24,059  $ 29,750
   Issuance of common stock....     24       --        111         --       111
   Net income for the year.....     --       --         --        428       428
                                -------  -------  ---------  ---------  --------
Balances December 31, 2003.....  9,711       10      5,792     24,487    30,289
   Issuance of common stock....     53       --        200         --       200
   Net loss for the year.......     --       --         --     (5,118)   (5,118)
                                -------  -------  ---------  ---------  --------
Balances December 31, 2004.....  9,764       10      5,992     19,369    25,371
   Issuance of common stock....     22       --         30         --        30
   Net income for the year.....     --       --         --      3,374     3,374
                                -------  -------  ---------  ---------  --------
Balances December 31, 2005.....  9,786  $    10  $   6,022  $  22,743  $ 28,775
                                =======  =======  =========  =========  ========`

The accompanying notes are an integral part of these financial statements.

---



Scientific Technologies Incorporated
                  Notes to Consolidated Financial Statements

NOTE 1-THE COMPANY AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

The Company

Scientific Technologies Incorporated (the "Company") is an Oregon corporation headquartered in Fremont,
California, and develops, manufactures and markets safety light curtains, industrial sensors, optical profilers, microcomputers and
power monitoring devices for factory automation applications. In addition, the Company provides safeguarding equipment installation,
rebuilding, repair and maintenance of fabricating machinery. A majority of the Company's outstanding common stock is held by
Scientific Technology Incorporated, a California corporation (the "Parent").

The Company operates in two business segments - the
development, manufacture and marketing of industrial safety products and the development, manufacture and marketing of industrial
automation products. The Company operates in an industry characterized by significant competition.

Use of Estimates

The preparation of the consolidated financial statements in conformity with accounting principles generally
accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of
assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts
of revenues and expenses during the reported periods. Actual results could differ from those estimates.

Basis of Presentation

The consolidated financial statements include the accounts of the Company and its subsidiaries after
elimination of all significant intercompany accounts and transactions.

Reclassification

Certain prior year items previously reported in the 2004 financial statement  have been reclassified to conform to 2005
presentation as follows:

- Certain sales reserves of $326,000 have been reclassified from accrued expenses to contra accounts receivable.
- Certain sales reserves of $212,000 have been reclassified from accrued expenses to contra inventory.

As a result, we have also restated our Consolidated Statement of Cash Flows for 2004, which resulted in certain reclassifications
within the cash flows provided by operating activities. These reclassifications had no effect on the statement of operations.

Restatement

Certain items previously reported in the 2004 financial statements have been restated to conform
to 2005 presentation as follows:







As a result, we have also restated our Consolidated Statement of Cash Flows for 2004, which resulted in certain
reclassifications between operating and investing cash flows. These restatements have no effect on our results of operations.

Cash and Cash Equivalents

The Company invests primarily in money market accounts and short-term bonds held at financial
institutions and considers all highly liquid investments with a maturity of less than 90 days when purchased to be cash equivalents.
Accordingly, these investments are subject to minimal credit and market risk.

All of our short-term investments are valued at fair value based on quoted market prices.

Allowance for Doubtful Accounts

We maintain allowances for estimated losses from the inability of our
customers to make required payments. We perform ongoing credit evaluations of our customers and adjust credit limits based upon
payment history and the customer's current credit worthiness, as determined by our review of their current credit information. We
continuously monitor collections and payments from our customers and maintain a provision for estimated credit losses based upon our
historical experience and any specific customer collection issues that we have identified. While such credit losses have historically been
within our expectations and the provisions established, we cannot guarantee that we will continue to experience the same credit loss
rates that we had in the past. A significant change in the liquidity or financial position of any one of our customers could have an
adverse impact on the collectability of our accounts receivable and our future operating results. An account is written off or written down
to its net realizable value, when we determine that it is in bankruptcy, liquidation, cannot be located, or the cost of collection exceeds
the realizable value of the account.

Inventories

Inventories are stated at the lower of cost (first-in, first-out) or market. We value our inventory at the lower
of the actual cost to purchase and/or manufacture the inventory or the current estimated market value of the inventory. Cost is
computed using standard cost, which approximates actual, on a first-in-first-out basis. We regularly review inventory quantities on hand
and may write-down excess and obsolete inventory based primarily on our historical consumption and our estimated forecast of product
demand and production requirements. Demand for our products can fluctuate significantly. In addition, our industry is characterized by
technological change, new product development, and product obsolescence that could result in an increase in obsolete inventory on
hand. Our estimates of future product demand may differ from actual results, in which case we may adjust the provision required for
excess and obsolete inventory. In the future, if our inventory is determined to be overvalued, we would be required to recognize such
reduced value in our cost of goods sold at the time of such determination. Likewise, if our inventory is determined to be undervalued,
we may have over-reported our costs of goods sold in previous periods and will not recognize such additional operating income until the
time of sale. Therefore, although we make every effort to ensure the accuracy of our forecasts of future product demand, any significant
unanticipated changes in demand or technological developments could have a significant impact on the value of our inventory and our
reported operating results.

Property and Equipment

Property and equipment are recorded at cost less accumulated depreciation and amortization. Depreciation
is provided using the straight-line method over the estimated useful lives, which range from three to ten years. Leasehold improvements
are amortized over the shorter of the term of the lease or the estimated life of the improvements.

Goodwill and Other Intangible Assets

We review the recoverability of our long-lived assets, such as fixed assets, goodwill, intangible assets and
investments, when events or changes in circumstances indicate that the carrying amount of the asset or asset group may not be
recoverable. The assessment of possible impairment is based on our ability to recover the carrying value of the asset or asset group
from the expected future pre-tax cash flows (undiscounted and without interest charges) of the related operations. If these cash flows
are less than the carrying value of such asset, an impairment loss is recognized for the difference between the estimated fair value and
carrying value. The measurement of impairment requires management to estimate future cash flows and the fair value of long-lived
assets. In addition, we review the valuation of goodwill at least annually.

During 2004, we reviewed the financial forecasts and budgets for MSD, Lundahl Instruments and PSI-
Tronix.  Due to reduced revenue and margin levels, we determined that approximately $3.4 million of the book value of the MSD
intangibles was not recoverable and recorded an additional impairment charge for this amount to reduce the MSD intangibles to their
fair value. Based on a review of the expected cash flow versus the current book value of the assets related to the Lundahl acquisition,
we determined that an impairment charge was not necessary.  Based on our review of the cash flows related to the PSI-Tronix
acquisition, we determined that a significant portion of these intangible assets was not recoverable and determined that an impairment
charge of $3.4 million was required.  We believe that while the technology, customer lists, and product lines still have value, the
prolonged downturn in the semiconductor market for our products makes it unlikely that we will recover the current book value of the
assets. In 2004 we identified certain impairment indicators for the Goodwill & Intangibles which resulted in an impairment of
$6,800,000. A portion of these charges, $4.2, million, was recorded in cost of sales and the balance of $2.6 million was recorded as a
charge to general, selling and administrative expense.

Our review of financial forecasts and budgets for MSD, Lundahl Instruments and PSI-Tronix during 2005
disclosed no further impairment existed.

Fair Value of Financial Instruments

The Company measures its financial assets and liabilities in accordance with generally accepted
accounting principles in the United States of America. For the Company's financial instruments, including cash, cash equivalents, trade
accounts receivable, receivable from parent, accounts payable and accrued expenses, the carrying amounts approximate fair value due
to the short maturities.

Revenue Recognition

The Company has product and services sales. During the years ended December 31, 2005 and
2004, product sales represented 93% and 92% of sales, respectively. Service Sales represented 7% and 8% of sales, respectively. The
Company has sales to OEMs and distributors. During the years ended December 31, 2005 and 2004, $44.1 million, or 72% of sales
and $41.1 million or 70% of our sales were sold to distributors, respectively.

Revenue from product sales to OEMs and distributors is recognized upon
shipment when shipped FOB our plant or upon receipt by the customer when shipped FOB destination, a signed purchase order exists,
the price is fixed or determinable, collection of the resulting receivable is considered reasonably assured and product returns can be
reasonably estimated. Subsequent to the sale of the products, we have no obligation to provide any modification or customization,
upgrades, enhancements or post contract customer support.

Our agreements with our distributors include certain product
rotation, price protection, and warranty rights. All distributors have the right to rotate slow moving products four times each fiscal year.
The maximum dollar value of inventory eligible for rotation is equal to eight percent of our products purchased by the distributor during
the previous fiscal year.  In order to take advantage of their product rotation rights, the distributors must order and take delivery of
additional products equal to at least the dollar value of the products that they want to rotate. Reserves for the right of return and
restocking are established based on the requirements of Statement of Financial Accounting Standards ("SFAS") 48,
Revenue Recognition when Right of Return Exists because we have visibility into our distributor's inventory and have sufficient
history to estimate returns. We record a reserve based on historical trend. Stock rotation and returns estimates are recorded as
reductions of sales and cost of sales. Price protection estimates are recorded as reductions of sales and warranty estimates are
recorded against cost of sales.

Each distributor is also allowed certain rebates and price
protection rights. If and when we reduce or plan to reduce the price of any of our products and the distributor is holding any of the
affected products in inventory, we will credit the distributor the difference in price when it places its next order with us. We record an
allowance for price protection reducing our net sales and increasing our accrued liabilities based on specific terms and historical
trend.

The company provides a warranty to its customers for a period of 12 to 18 months. Upon revenue recognition,
we provide for the estimated costs that may be incurred for product warranties. We estimate sales returns and warranty costs based on
historical experience and the best information we have at the time we report our financial statements. Actual results could differ from
these estimates. Warranty expenses are recorded against cost of sales.

Installation and engineering service revenue is recognized when
services are rendered, or when an identifiable portion of the contract is completed, no significant post-delivery obligations exist and
collection of the resulting receivable is considered reasonably assured. Customer acceptance is required for revenue recognition of the
service revenue. Service revenue was $4.4 million for both years ended December 31, 2005 and 2004.

Shipping and Handling

All amounts billed to a customer in a sale transaction related to shipping and handling, if any, represent
revenues earned for the goods provided and are classified as revenue. Costs incurred for shipping and handling are included in cost of
sales.

Research and Development

Research and development costs are expensed as incurred.

Advertising Costs

Advertising costs are recorded as expenses when incurred. Advertising costs for the years ended
December 31, 2005, 2004 and 2003 were $627,000, $492,000, and $548,000.

Stock-based compensation

The Company accounts for stock-based compensation using the intrinsic value method prescribed in
Accounting Principles Board Opinion No. 25, or APB No. 25, "Accounting for Stock Issued to Employees."
Under APB No. 25, compensation cost is measured as the excess, if any, of the quoted market price of the Company's stock at
the date of grant over the exercise price of the option granted.  Compensation cost for stock options, if any, is recognized ratably over
the vesting period.  The Company provides additional pro forma disclosures as required under Statement of Financial Accounting
Standards ("SFAS") No. 123, "Accounting for Stock-Based Compensation" and SFAS No. 148,
"Accounting for Stock-Based Compensation, Transition and Disclosure".

SFAS No. 148, issued in December 2003 amends SFAS
No. 123 in December 2003 to require that disclosures of the pro forma effect of using the fair value method of accounting for
stock-based employee compensation be displayed more prominently and in a tabular format. The following table sets forth the effect on
the Company's net income (loss) and net income (loss) per share as if the Company had recorded compensation costs based on the
estimated grant date fair value as defined by SFAS No. 123 for all granted stock-based awards (in thousands, except per share
amounts).



|                                                                                                                         | Years Ended December 31, | 
|------------------------------------------------------------------------------------------------------------------------ | ------------------------ | 
|                                                                                                                         | 2005                     | 
|Net income (loss), as reported                                                                                           | $3,374                   | 
|                                                                                                                         |                          | 
|Add: Stock-based employee compensation
expense included in reported net income
 (loss)                                   | -                        | 
|Deduct: Stock-based employee compensation
expense determined under fair value based
 method for all awards, net of taxes | 80                       | 
|Pro forma net income (loss)                                                                                              | $3,294                   | 
|                                                                                                                         |                          | 
|Net income (loss) per share - basic and
diluted:                                                                         |                          | 
|As reported                                                                                                              | $0.35                    | 
|Pro forma                                                                                                                | $0.34                    | 

This information is required to be determined as if the Company had accounted for its employee stock
options (including shares issued under the Employee Stock Purchase Plan, collectively called options) as defined by SFAS No. 123.
The fair value of options reported below has been estimated at the date of grant using the Black-Scholes option-pricing model for 2005,
2004 and 2003 using the following assumptions:

|                                | Stock Options | Employee Stock Purchase Plan
|------------------------------- | ------------- | ----------------------------
|                                | 2005          | 2004                        
|                                |               |                             
|Risk-free interest rates        | 3.1% - 3.7%   | 3.4% - 3.9.%                
|Expected lives (in years)       | 7             | 4                           
|Expected dividend yield         | 0%            | 0%                          
|Expected stock price volatility | 45.0%         | 90.1%                       

The weighted-average estimated fair value of options granted during the
year 2005, 2004 and 2003 were $1.43, $1.72 and $1.43, respectively. The weighted-average estimated fair value of employee stock
purchase rights granted under the Employee Stock Purchase Plan were $0.58, $.66 and $.57 in 2005, 2004 and 2003, respectively.
The effect on earnings per share of using the fair value of options is disclosed in Note 1 above.

On December 22, 2005, the board of directors approved the acceleration of vesting of all unvested options to
purchase 9,750 shares of the Company's common stock that are held by employees and consultants, including outside directors, which
had an exercise price per share greater than or equal to $4.22. The weighted average exercise price of options accelerated was $5.17.
Under FAS 123R, the acceleration of these options will allow the Company to avoid the recognition of approximately $16,386 in
share-based compensation expense in 2006.

Income Taxes

Deferred income taxes are provided for the temporary differences between the financial reporting basis and
the tax basis of the Company's assets and liabilities. The Company is included in the consolidated tax return of the Parent, but provides
for income taxes on a separate return basis pursuant to a tax sharing arrangement, which limits the Company's tax liability to the
amount payable to the Parent. Income taxes payable are recorded as a reduction to the receivable from Parent account or as an
increase to the payable to Parent account.

Comprehensive Income

Comprehensive income is defined to include all changes in shareholders' equity during a period from non-
owner sources. There were no significant differences between the Company's net income (loss) and its total comprehensive income
(loss) for any of the periods presented. Further, the Company has no accumulated comprehensive income at December 31, 2005 or
2004.

Recent Accounting Pronouncements



The FASB issued SFAS No. 154, "Accounting Changes and Error Corrections", which
replaces APB Opinion No. 20, "Accounting Changes" and SFAS No. 3, "Reporting Accounting Changes in Interim
Financial Statements". This pronouncement applies to all voluntary changes in accounting principle, and revises the requirements
for accounting for and reporting a change in accounting principle. SFAS No. 154 requires retrospective application to prior periods'
financial statements of a voluntary change in accounting principle, unless it is impracticable to do so. This pronouncement also requires
that a change in the method of depreciation, amortization, or depletion for long-lived, non-financial assets be accounted for as a change
in accounting estimate that is affected by a change in accounting principle. SFAS No. 154 retains many provisions of APB Opinion 20
without change, including those related to reporting a change in accounting estimate, a change in the reporting entity, and correction of
an error. The pronouncement also carries forward the provisions of SFAS No. 3 which govern reporting accounting changes in interim
financial statements. SFAS No. 154 is effective for accounting changes and corrections of errors made in fiscal years beginning after
December 15, 2005. The Statement does not change the transition provisions of any existing accounting pronouncements, including
those that are in a transition phase as of the effective date of SFAS No. 154. We do not expect the adoption of SFAS 154 to have a
material impact on our results of operations, financial position or liquidity.

NOTE 2 - RELATED PARTY TRANSACTIONS

In 2005, 2004, and 2003 the Company provided certain
management services to the Parent. Costs of these services were allocated to the Parent based upon the amount of time employees
spent providing these services. The amount charged to the Parent was $298,000 for 2005, $327,000 for 2004, and $353,000 for
2003.

The Company leases approximately 85,000 square feet in a
95,700 square foot facility in Fremont, CA, owned by Ardenwood, LLC, an affiliate of the Parent. The Company also leases another
25,000 square feet in another facility in Logan, CA owned by the same affiliate. The lease terms are for five and ten years, respectively.
Overhead costs are allocated primarily on the basis of square footage utilized. See Commitments and Contingencies at Note 12.

STI Machine Services is located in an 8,585 square foot facility in Anaheim, California.  This facility is owned by
a former employee and previous owner of STI Machines Services (Dunn Sales, Inc.).  The current lease will expire in June, 2006;
however the owner has agreed to extend the lease for another year with an option for a second year.  See Commitments and
Contingencies at Note 12.

The Company utilizes a receivable from/payable to Parent account to record activity including cash
received, cash disbursed and amounts owed to and receivable from the Parent for allocated charges and dividends. The Parent files a
consolidated tax return including the Company's accounts. The tax provision or benefit is calculated on a stand-alone basis, but
includes the Company's intercompany tax sharing arrangement. The net effect of transactions with the Parent resulted in a receivable
from Parent of $228,000 at December 31, 2005 and $941,000 at December 31, 2004. The decrease was due to research and
development tax refunds received in 2005.

In addition, the Company is party to a capital lease of $96,000 at December 31, 2005 under which the Parent is
the lessor. At December 31, 2005, future minimum payments under this lease due in the years 2006 and 2007 were approximately
$68,000 and $28,000 respectively. Collectability of the receivable from Parent is assured because the Parent has its own source of
cash flow and it has $1.3 million in cash at December 31, 2005.

Aurora Technology Pte. Ltd., a supplier of parts and services to the Company, is also the Company's 50%
owned joint venture. During 2005, 2004, and 2003 the Company paid Aurora approximately $6,749,000, $6,311,000, and $4,973,000,
respectively for products. The carrying value of our investment in Aurora, which is accounted for using the equity method, amounted to
approximately $713,000 and $550,000 as of December 31, 2005 and 2004.

NOTE 3 - BALANCE SHEET DATA

|                                               | December 31,  
|---------------------------------------------- | --------------
|                                               | 2005          
|                                               | (In thousands)
|Allowance for doubtful accounts:               |               
|Balance at beginning of year                   | $      331    
|Addition                                       | 43            
|Utilized                                       | (215)         
|Balance at end of year                         | $159          
|                                               |               
|Inventories                                    |               
|Finished goods                                 | $   2,321     
|Work in Process                                | 310           
|Subassemblies                                  | 1,427         
|Raw materials                                  | 4,356         
|                                               | $8,414        
|Propertyand Equipment:                         |               
|Equipment                                      | $ 11,150      
|Furniture and fixtures                         | 2,283         
|Leasehold improvements                         | 756           
|                                               | 14,189        
|Less:accumulated depreciation and amortization | (10,965)      
|                                               | $3,224        
|Depreciation expense                           | $1,214        
|                                               |               
|Accrued Expenses:                              |               
|Accrued commissions                            | $      112    
|Warranty reserve                               | 286           
|Stock rotation reserve                         | 141           
|Price allowance reserve                        | 123           
|Returns reserve                                | 256           
|Legal accrual                                  | 15            
|Accrued income tax                             | --            
|Other                                          | 252           
|                                               | $1,185        
|                                               |               



NOTE 4 - GOODWILL AND OTHER INTANGIBLE ASSETS:

|                                  |                                | December 31, 2005                       | December 31, 2004                         
|--------------------------------- | ------------------------------ | --------------------------------------- | ------------------------------------------
|                                  | Life
                  (Years) | Gross Carrying
                  Amount | Accumulated
                  Amortization
|Technology                        | 15                             | $ 3,696                                 | (2,352)                                   
|Customer relationships            | 7                              | 2,457                                   | (2,305)                                   
|Tradename                         | 5                              | 403                                     | (403)                                     
|Product lines                     | 12                             | 840                                     | (572)                                     
|Covenant not to compete           | 2                              | 50                                      | (50)                                      
|Total amortized intangible assets |                                | 7,446                                   | $ (5,682)                                 
|Goodwill                          |                                | 216                                     |                                           
|Total                             |                                | $ 7,662                                 |                                           

We incurred amortization expense of $332,000 and $1,194,000 in 2005
and 2004, respectively, of which $201,000 and $580,000 were included in cost of goods sold.



|Future Amortization |        
|------------------- | -------
|2006                | 332    
|2007                | 222    
|2008                | 201    
|2009                | 201    
|2010                | 201    
|Thereafter          | 607    
|Total               | $ 1,764

During 2004, we reviewed the financial forecasts and budgets for MSD, Lundahl Instruments and PSI-Tronix.
Due to reduced revenue and margin levels, we determined that approximately $3.4 million of the book value of the MSD intangibles
was not recoverable and recorded an additional impairment charge of this amount to reduce the MSD intangibles to their fair value.
Based on a review of the expected cash flow versus the current book value of the assets related to the Lundahl acquisition, we
determined that an impairment charge was not necessary.  Based on our review of the cash flows related to the PSI-Tronix acquisition,
we determined that a significant portion of these intangible assets was not recoverable and determined that an impairment charge of
$3.4 million was required.  We believe that while the technology, customer lists, and product lines still have value, the prolonged
downturn in the semiconductor market for our products makes it unlikely that we will recover the current book value of the assets. Of
this expense, $4.2 million relating to technology and product lines was recorded in cost of sales and $2.6 million was recorded as
selling, general and administrative expense.

Our review of financial forecasts and budgets for MSD, Lundahl Instruments and PSI-Tronix during 2005 disclosed no further
impairment existed.

NOTE 5 - INCOME TAXES

The provision (benefit) for income taxes is as follows:



|                                  | Year Ended December 31
|--------------------------------- | ----------------------
|                                  | 2005                  
|                                  | (In thousands)        
|Current tax expense               |                       
|Federal                           | $       36            
|State                             | 1                     
|                                  | 37                    
|Deferred tax expense (benefit)    |                       
|Federal                           | 420                   
|State                             | (137)                 
|                                  | 283                   
|Charge in lieu of tax for options | -                     
|Total provision for income taxes  | $320                  
|                                  |                       

The provision (benefit) for income taxes differs from the amount of tax
determined by applying the applicable federal statutory income tax rate to pretax income as a result of the following
differences:



|                                           | 2005  | 2004  | 2003
|------------------------------------------ | ----- | ----- | ----
|Statutory U.S. tax rate                    | (34)% | 34%   | 34% 
|State income taxes, net of federal benefit | (4)   | (4)   | 6   
|Research and development and other credits | (22)  | (1)   | (24)
|Nondeductible expenses                     | (1)   | 6     | 22  
|Effective tax rate                         | 9%    | (33)% | 38% 

Deferred tax assets (liabilities) consist of the following: (In thousands)



|                                            | December 31,
|------------------------------------------- | ------------
|                                            | 2005        
|Deferred tax asset                          |             
|Inventory reserve                           | $ 565       
|Other reserves and accruals                 | 1,207       
|Depreciation and amortization               | 1,646       
|Research & development tax credit and other | 695         
|Gross deferred tax assets                   | 4,113       
|                                            |             
|Long-term deferred tax liability            |             
|Depreciation and amortization               | (592)       
|Other                                       | -           
|Amortization of intangibles                 | (116)       
|Gross deferred tax liability                | (708)       
|                                            |             
|Net deferred tax assets                     | $3,405      

As of December 31, 2005 the company had Federal and State research credits of approximately
$191,000 and $463,000 to offset future income tax liabilities. The Federal credits will begin to expire in 2022 if not utilized.

NOTE 6 - INCOME (LOSS) PER SHARE

A reconciliation of the numerators and denominators of the basic
and diluted income (loss) per common share computations is provided below.

`(In thousands)     (Per
                                            ------------------   Share)
                                             Income    Shares    Amount
                                            --------  --------  --------
2005:
Basic earnings per share calculation...... $  3,374     9,773  $   0.35
Effect of dilutive securities:
  Stock options...........................       --         2        --
                                            --------  --------  --------
Diluted earnings per share calculation.... $  3,374     9,775  $   0.35
                                            ========  ========  ========

2004:
Basic earnings per share calculation...... $ (5,118)    9,741  $  (0.53)

2003:
Basic earnings per share calculation...... $    428     9,711  $   0.04
Effect of dilutive securities:
  Stock options...........................       --        23        --
                                            --------  --------  --------
Diluted earnings per share calculation.... $    428     9,734  $   0.04
                                            ========  ========  ========`

The number of common stock equivalents excluded from the earnings per share calculation because they would be antidilutive total
to 633,000 in 2004.

NOTE 7 - DEBT:

The Company has a $6,000,000 line of credit with a bank, of which no amount was outstanding at December
31, 2005 or 2004. The line bears interest at the bank's prime rate (7.25% at December 31, 2005), is secured by accounts receivable,
inventories and fixed assets, and expires on June 30, 2006. The Company's bank line of credit as amended, contains covenants which
require the Company to meet specific financial tests. The financial tests were as follows: (1) a minimum tangible net worth requirement
of $18,000,000 (2) ratio of debt to tangible net worth of no more that 1.00 to 1. (3) ratio of the sum of cash, cash equivalents and
accounts receivable to current liabilities of not less than 1.10 to 1, and (4) losses not to exceed $1,000,000 on an annual basis.  At
December 31, 2004, the Company was not in compliance with the covenant for losses. A waiver for the covenant was received on
March 23, 2005.  At December 31, 2005, the Company was in compliance with all covenants.

NOTE 8 - STOCK OPTION PLAN AND EMPLOYEE STOCK PURCHASE PLAN

Stock Option Plan

The 1997 Stock Option Plan (the "Plan") provides for the granting of stock options to employees
and consultants of the Company. Options granted under the Plan may be either incentive stock options or nonqualified stock options.
Incentive stock options ("ISO") may be granted only to Company employees (including officers and directors who are also
employees). Nonqualified stock options ("NSO") and stock purchase rights may be granted to Company employees and
consultants. The Company has reserved 1,000,000 shares of common stock for issuance under the Plan. No person will be eligible to
receive options for more than 250,000 shares in any fiscal year.

Options under the Plan may be granted for periods of up to ten
years and at prices no less than 85% of the estimated fair market value of the shares on the date of grant, provided, however, that (i)
the exercise price of an ISO shall not be less than 100% of the estimated fair market value of the shares on the date of grant, and (ii)
the exercise price of an ISO granted to a 10% or more shareholder shall not be less than 110% of the estimated fair value of the shares
on the date of grant. Most options granted under the Plan through December 31, 2005 vest over a five-year period.

Activity under the Plan is set forth below:

| |                              | Available for Grant | Number of Shares
Outstanding | Weighted Average Exercise
Price
| | ---------------------------- | ------------------- | ---------------------------- | -------------------------------
| | Balance at December 31, 2002 | 188,942             | 671,898                      | $5.87                          
| | Granted                      | (7,500)             | 7,500                        | $4.15                          
| | Exercised                    | --                  | (3,000)                      | $3.19                          
| | Cancelled                    | 19,666              | (19,666)                     | $5.09                          
| | Balance at December 31, 2003 | 201,108             | 656,732                      | $5.88                          
| | Granted                      | (20,000)            | 20,000                       | $5.29                          
| | Exercised                    | --                  | (25,000)                     | $4.00                          
| | Cancelled                    | 32,000              | (35,500)                     | $5.95                          
| | Balance at December 31, 2004 | 213,108             | 616,232                      | $5.48                          
| | Granted                      | (11,000)            | 11,000                       | $3.31                          
| | Exercised                    | --                  | --                           | --                             
| | Cancelled                    | 45,000              | (72,566)                     | $5.50                          
| | Balance at December 31, 2005 | 247,108             | 554,666                      | $5.48                          

Information relating to stock options outstanding and exercisable at December 31, 2005 is as follows:

|                  | Options Outstanding |  |                                                     | Options Vested and Exercisable
|----------------- | ------------------- |  | --------------------------------------------------- | ------------------------------
|Exercise Price    | Number outstanding  |  | Weighted Average Remaining Contractual Life (Years) |                               
|$3.00   -   $3.99 | 180,400             |  | 6.8                                                 |                               
|$4.01   -   $5.74 | 56,100              |  | 5.9                                                 |                               
|$6.00   -   $6.80 | 237,500             |  | 4.6                                                 |                               
|$7.00   -   $9.56 | 80,666              |  | 1.6                                                 |                               
|                  | 554,666             |  |                                                     |                               
|                  |                     |  |                                                     |                               

Employee Stock Purchase Plan

The Company has reserved 600,000 shares of Common Stock for issuance under the 1997 Employee
Stock Purchase Plan (the "Purchase Plan"). Employees generally will be eligible to participate in the Purchase Plan if they
are customarily employed by the Company for more than 20 hours per week and more than five months in a calendar year and are not
(and would not become as a result of being granted an option under the Purchase Plan) 5% Shareholders of the Company. Under the
Purchase Plan, eligible employees may choose each year to have up to 15% of their eligible annual compensation withheld to purchase
the Company's common stock. Each offering period commences on the first trading day on or after May 1, and November 1 of each
year. The price at which the common stock is purchased under the Purchase Plan is 85% of the lesser of the closing price of the
Company's common stock on the first day of the applicable offering period or on the last day of that purchase period. The Purchase
Plan will terminate after a period of ten years unless terminated earlier as permitted by the Purchase Plan. During the years ended
December 31, 2005, 2004 and 2003, 18,488, 16,812 and 20,826 shares of common stock were purchased under this plan at a
weighted-average price of $2.48, $3.93 and $4.12, respectively.

NOTE 9 - RETIREMENT SAVINGS PLAN

The Company adopted a defined contribution retirement savings
plan under Section 401(k) of the Internal Revenue Code.  This plan covers substantially all employees who meet minimum age and
service requirements and allows participants to defer a portion of their annual compensation on a pre-tax basis.  The plan allows
employer's matching contributions equal to 50% of employees' contributions subject to a maximum of 6% of employees' compensation.
Contributions to the plan may be made at the discretion of the Board of Directors. The Company contributed $242,000 in 2005.  The
Company made no contributions in 2004 or 2003.

NOTE 10 - SEGMENT AND GEOGRAPHIC INFORMATION

The Company is organized into two business segments: Safety
Products Group, whose products include safety light curtains, safety interlocks and relays, safety mats and controllers, safety contact
strips, and optical profiling scanners, and installation services, and Automation Products Group, whose products include photoelectric
and fiberoptic sensors, control components, power monitoring electronics, defense electronics, industrial control microcomputers,
peripherals and software, level and flow sensors, non-contact ultrasonic sensors and controllers, pressure transducers, digital pressure
gauges, displacement and velocity transducers and pressure comparators.

Financial information for each product group for the years ended December 31, 2005, 2004 and 2003
follows:

`Safety Products   Automation Products         Total
                                       ----------------  -------------------  -------------------
2005                                                                                             
Sales................................ $         52,141  $             9,017  $            61,158
Group operating profit (loss)........ $          3,858  $              (708) $             3,150
Total assets......................... $         28,935  $             6,787  $            35,722

Capital expenditures................. $            807  $               195  $             1,002
Depreciation and amortization........ $            926  $               620  $             1,546
                                                                                                 
2004                                                                                             
Sales................................ $         49,041  $             9,384  $            58,425
Intangible impairment charges........ $          3,378  $             3,438  $             6,816
Group operating profit (loss)........ $         (2,943) $            (4,915) $            (7,858)
Total assets......................... $         25,892  $             7,444  $            33,336

Capital expenditures................. $          1,006  $               191  $             1,197
Depreciation and amortization........ $          1,426  $             1,189  $             2,615
                                                                                                 
2003                                                                                             
Sales................................ $         46,708  $             8,786  $            55,494
Group operating profit (loss)........ $          2,265  $            (1,769) $               496
Total assets......................... $         32,469  $             5,210  $            37,679

Capital expenditures................. $            636  $               799  $             1,435
Depreciation and amortization........ $          1,552  $             1,140  $             2,692`

The Company's sales by geographic location of customers in 2005 were: North America - $57,051,000, Asia -
$2,630,000, Europe - $803,000, South America $354,000 and all others $320,000.

NOTE 11 - CONCENTRATION OF CREDIT RISK

Financial instruments that potentially subject the Company to
significant concentrations of credit risk consist principally of cash, cash equivalents, short-term investments and trade accounts
receivable. The Company places its cash and cash equivalents in a variety of money market accounts and short-term bonds. The
Company further limits its exposure to these investments by placing such investments with various high quality financial institutions.
The Company routinely performs evaluations of these financial institutions. The Company offers credit terms on the sale of its products
to its customers in the normal course of business. The Company performs ongoing credit evaluations of its customers' financial
condition and, generally, requires no collateral from its customers. The Company maintains an allowance for uncollectible accounts
receivable based upon the expected collectability of all accounts receivable. No customer accounted for more than 10% of accounts
receivable at December 31, 2005, 2004 or 2003. HH Barnum accounted for 11% and 10% of net sales for the years ended December
31, 2005 and 2004.

The Company operates principally in the United States.

NOTE 12 - COMMITMENTS AND CONTINGENCIES

The Company leases certain office and manufacturing space
and other equipment under noncancellable operating leases. At December 31, 2005, future minimum payments under these leases due
in the years 2006 through 2007 were approximately $1,220,000 and $1,034,000; $982,000 per year from 2008 to 2010.  Of these
amounts, $1,108,000 in 2006 and $982,000 from 2007 to 2010 were related to lease agreements with the Parent or an affiliate of the
Parent.

Rent expense under operating lease agreements was approximately $1,141,000 in 2005, $1,320,000 in 2004,
and $1,168,000 in 2003.  Of these amounts, $1,033,000, $1,133,000, and $963,000 were related to lease agreements with the Parent
or affiliates of the Parent. Rent expense is recorded on a straight-line basis.

Future minimum lease payments under noncancellable operating and capital leases, are as follows (in
thousands):



|Year ending December 31. | Operating | Capital
|------------------------ | --------- | -------
|2006                     | $1,220    | $  68  
|2007                     | 1,034     | 28     
|2008                     | 982       |        
|2009                     | 982       | --     
|2010                     | 982       | --     
|Thereafter               | 900       | --     
|Total                    | $6,100    | $  96  
|                         |           |        

From time to time, the Company is involved in litigation in the normal course of business. Management believes
that the outcome of existing matters will not have a material adverse effect on the Company's consolidated financial position, results of
operations or cash flows.

On January 19, 2005, the Company agreed to the terms of a settlement with Paul Davis Automation, Inc.
relating to a lawsuit filed by Paul Davis Automation in the United States District Court, Eastern Division. In the lawsuit, plaintiff had
alleged unpaid commission fees upon termination of a contract between the parties. The settlement was agreed to as a compromise
among the parties for the complete and final settlement of the lawsuit. Based on the terms of the settlement agreement, which was fully
executed by the parties on January 21, 2005, the Company made a cash payment of approximately $600,000 to Paul Davis
Automation, a former manufacturer's representative for Scientific Technologies. This amount was accrued at December 31, 2004 and
payment was made on February 14, 2005.

The Company offers warranties on certain products and records a liability for the estimated future costs
associated with warranty claims, which is based upon historical experience and the Company's estimate of the level of future costs. A
reconciliation of the changes in the Company's warranty liability for the years ended December 31, 2005 and 2004 follows (in
thousands):

|                                               | December 31,
|---------------------------------------------- | ------------
|                                               | 2005        
|Warranty accrual at the beginning of the year  | $ 285       
|Accruals for warranties issued during the year | 201         
|Expenses incurred during the year              | (200)       
|Warranty accrual at the end of the year        | $ 286       

INDEMNIFICATIONS

In November 2002, the FASB issued FIN No. 45, Guarantor's Accounting and Disclosure Requirements for
Guarantees, Including Indirect Guarantee of Indebtedness of Others. We have determined that certain agreements, described below,
fall within the scope of FIN 45.

Under our by-laws, we have agreed to indemnify our officers and
directors for certain events or occurrences arising as a result of the officer or director's serving in such capacity. We have a directors
and officers liability policy that limits our exposure and enables us to recover a portion of any future amounts paid resulting from the
indemnification of our officers and directors. We believe the fair value of the indemnification agreements is minimal and we have not
recorded a liability for these agreements as of December 31, 2005.

Item 9. CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON
                       ACCOUNTING AND FINANCIAL DISCLOSURE

None.

Item 9A.    CONTROLS AND PROCEDURES

Evaluation of Disclosure Controls and Procedures

Our management, including our Chief Executive Officer and our Chief Financial Officer, are responsible for
evaluating and attesting as to the effectiveness of our disclosure controls and procedures as of the end of the period covered by this
Annual Report on Form 10-K.  This evaluation includes consideration of our internal control over financial reporting.

Based on their evaluation as of the end of the period covered by this report, our Chief Executive Officer and
Chief Financial Officer have concluded that, as of December 31, 2005, our disclosure controls and procedures (as defined in Rules
13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934) were effective to ensure that information required to be disclosed
by us in reports that we file or submit under the Securities Exchange Act of 1934 is recorded, processed, summarized and reported
within the time periods specified in Securities and Exchange Commission rules and forms.

In connection with the audit of our consolidated financial statements for the year ended December 31, 2004,
and in light of new, recently issued interpretative guidance in relation to the assessment of the operating effectiveness of a company's
internal controls, our management and our independent registered public accounting firm, BDO Seidman, LLP, identified certain
"material weaknesses" (as such term is defined under Public Company Accounting Oversight Board Auditing Standard No. 2 ) in
our internal controls.

The material weaknesses identified related to: (1) inadequate preparation and insufficient review and
analysis of certain financial statement account reconciliations primarily relating to inventory and accounts receivable valuation;
(2) lack of documented policies and procedures related to changes and updates in the accounting system; and (3) lack of
sufficient personnel with appropriate qualifications and training in certain key accounting roles and adherence to certain control
disciplines within the accounting and financial reporting function. Our management believes that the material weaknesses arose as a
result of the Company's significant acquisitions in Logan, Utah and Anaheim, California in recent years.

Changes in Internal Control Over Financial Reporting

In response to the material weaknesses in our internal controls noted above, and in preparation for our
compliance with Section 404 of the Sarbanes-Oxley Act of 2002, which will be required as of the end of our fiscal 2007, we have
implemented the following corrective actions which remediated the material weaknesses:

(1)  We are implemented additional general ledger close and account
analysis procedures including procedures to analyze consolidated fluctuations and reporting.  These procedures also include analysis
of inventory and accounts receivable aging and valuation.

(2)  We are working with advisors to help establish policies and procedures related to changes and updates in
our accounting system; and

(3)  We have addressed our need for additional experienced finance personnel in order to improve our controls over financial
reporting, with the appointment of our Corporate Controller.

We intend to continue to evaluate the remediation efforts addressing the material weaknesses that
were identified and to take appropriate action be certain that the deficiencies identified in 2004 do not reoccur. In addition, as part of the
assessment of our internal control over financial reporting that we will undergo during our 2006 and 2007 fiscal years in connection with
the process required by Section 404 of the Sarbanes-Oxley Act of 2002, we intend to continue to review, evaluate and strengthen
our controls and processes. The Audit Committee of our Board of Directors is performing oversight of our implementation of
enhancements and improvements to our internal controls, and our management is reporting to our Audit Committee on a regular basis
regarding these matters.

We began to implement the changes described above during the first quarter of fiscal 2005. During the fourth quarter of fiscal 2005,
there were no changes in our internal control over financial reporting that have materially affected, or are likely to materially effect, our
internal control over financial reporting.

Item 9B.    OTHER INFORMATION.

None.

PART III

Certain information required by Part III is omitted from this Report in that the registrant will file a definitive Proxy
Statement for its 2006 Annual Meeting of Shareholders pursuant to Regulation 14A (the "Proxy Statement") no later than 120 days after
the end of the fiscal year covered by this Report, and certain information included therein is incorporated herein by reference.

Item 10. DIRECTORS AND EXECUTIVE OFFICERS OF THE REGISTRANT

The information required by this Item concerning the Company's directors and the Company's
executive officers is incorporated by reference to the sections entitled "Nominees" and "Management", respectively, appearing in the
Company's Proxy Statement for its 2006 Annual Meeting of Shareholders.

Item 11. EXECUTIVE COMPENSATION

The information required by this Item is incorporated by reference to the sections entitled "Executive
Compensation" and "Report of the Compensation Committee" appearing in the Proxy Statement for its 2006 Annual Meeting of
Shareholders.

Item 12.  SECURITY OWNERSHIP OF CERTAIN BENEFICIAL
OWNERS AND
MANAGEMENT

The information required by this Item is incorporated by
reference to the sections entitled "Security Ownership of Certain Beneficial Owners and Management" and "Equity
Compensation" appearing in the Proxy Statement for its 2006 Annual Meeting of Shareholders.

Item 13. CERTAIN RELATIONSHIPS AND RELATED
TRANSACTIONS

The information required by this Item is incorporated by
reference to the sections entitled "Certain Relationships and Related Transactions" appearing in the Proxy Statement for its 2006
Annual Meeting of Shareholders.

Item 14.    PRINCIPAL ACCOUNTING FEES AND SERVICES

The information required by this Item is incorporated by
reference to the sections entitled "Principal Accountant" appearing in the Proxy Statement for its 2006 Annual Meeting of
Shareholders.



PART IV

Item 15.   EXHIBITS, FINANCIAL STATEMENT SCHEDULES

(a)  The following documents are filed as a part of this Report:

1.  FINANCIAL STATEMENTS

Reference is made to the index appearing in Item 8(a) of this report.

2. FINANCIAL SCHEDULES

None.

3.    EXHIBITS AND EXHIBIT INDEX:

Exhibit 3.1 -  Articles of Incorporation, as amended, are incorporated by reference to the
                 Registrant's Form 10-K for the year ended December 31, 1988, Exhibit 3.1.

Exhibit 3.3 -  By-Laws are incorporated by reference to the Registrant's Form 10-K
for the year ended December 31, 1985, Exhibit 3.

Exhibit 4.1* -1997 Employee Stock Purchase Plan is incorporated by reference to the Registrant's Registration Statement
on Form S-8 dated October 2, 1998.

Exhibit 4.2* -1997 Stock Plan is incorporated by reference to the Registrant's
Registration Statement on Form S-8 dated October 2, 1998.

Exhibit 4.3 -  Amended and Restated 1997 Employee Stock Purchase Plan

Exhibit 10.1 -  Lease agreement dated February 21, 1995 for 6550 Dumbarton
Circle, Fremont, California 94555, is incorporated by reference to the Registrant's Form 10-KSB for the year ended December 31, 1994,
Exhibit 10.4.

Exhibit 10.2 - Bank agreement dated June 30, 2004 with Bank of The West is
incorporated by reference to the Registrant's Form 10-K for the year ended December 31, 2004

Exhibit 10.3 - Lease agreement dated June 1, 2004 with Scientific
Technology
Incorporated for 1025 W. 1700 N., Logan Utah 84321 is incorporated by reference to the Registrant's Form 10-K for the
year ended December 31, 2003.

Exhibit 10.4 - Memorandum Regarding Exercise of Option to Extend

Exhibit 10.5 - First Amendment to Credit Agreement

Exhibit 21.1 - Subsidiaries of the Registrant.

Exhibit 23.1 - Consent of BDO Seidman LLP, Independent Registered Public Accounting  Firm

Exhibit 23.2 - Consent of PricewaterhouseCoopers LLP, Independent Registered Public  Accounting Firm

Exhibit 24.1 - Power of Attorney (included on page 55).

Exhibit 31.1 - Certification of Chief Executive Officer Pursuant To Section 302(a) of the
  Sarbanes-Oxley Act of 2002

Exhibit 31.2 - Certification of Chief Financial Officer Pursuant To Section 302(a) of the
     Sarbanes-Oxley Act of 2002

Exhibit 32.1 - Certification of Chief Executive Officer and Chief Financial
Officer Pursuant To 18 U.S.C. Section 1350, As Adopted Pursuant
to Section 906 of the Sarbanes-Oxley Act Of 2002

* Management contract or compensatory plan

All other exhibits for which provision is made in Regulation S-K of the Securities and Exchange Commission are
not required under the related instructions or are inapplicable, and therefore have been omitted.

(b) Exhibits

See Item 15(a) above.

(c) Financial Statements

See Item 15(a) above.

---



SIGNATURES

Pursuant to the requirements of Section 13 or
15(d) of the Exchange Act, the registrant has caused this Report to be signed on
its behalf by the undersigned, thereunto duly authorized.

Dated: March 31, 2006



| |                                     
| | ------------------------------------
| | SCIENTIFIC TECHNOLOGIES INCORPORATED



| |     |                       
| | --- | ----------------------
| | By: | /s/ Anthony R. Lazzara

| |                                          
| | -----------------------------------------
| |                                          
| | Anthony R. Lazzara, Chairman of the Board

POWER OF ATTORNEY

KNOW ALL MEN BY THESE PRESENTS, that each
person whose signature appears below constitutes and appoints Anthony R. Lazzara
and Joseph J. Lazzara, jointly and severally, his attorney-in-fact, each with
the power of substitution, for him in any and all capacities, to sign any
amendments to this Report on Form 10-K and to file the same, with exhibits
thereto and other documents in connection therewith, with the Securities and
Exchange Commission, hereby ratifying and confirming all that each of said
attorneys-in-fact, or his substitute or substitutes, may do or cause to be done
by virtue hereof.

In accordance with the Exchange Act, this report has been
signed below by the following persons on behalf of the Registrant and in the
capacities and on the dates indicated.

|Signature                                       | Title                                                                                           | Date          
|----------------------------------------------- | ----------------------------------------------------------------------------------------------- | --------------
|/s/ Anthony R. Lazzara
Anthony R. Lazzara       | Chairman of the Board                                                                           | March 31, 2006
|/s/ Joseph J. Lazzara
Joseph J. Lazzara         | President, Chief Executive Officer,
     Treasurer, Director (Principal
     Executive Officer) | March 31, 2006
|/s/ James A. Lazzara
James A. Lazzara           | Vice President, Secretary and
     Director                                                     | March 31, 2006
|/s/ James A. Ashford
James A. Ashford           | Vice President and Director                                                                     | March 31, 2006
|/s/ Richard S. Baldwinson
Richard S. Baldwinson | Director                                                                                        | March 31, 2006
|/s/ Carl H. Frei
Carl H. Frei                   | Director                                                                                        | March 31, 2006
|/s/ Bernard J. Ploshay
Bernard J. Ploshay       | Director                                                                                        | March 31, 2006
|/s/ Richard O. Faria
Richard O. Faria           | Vice President and Chief Financial Officer
     (Principal Financial Officer)                   | March 31, 2006

---

SCIENTIFIC TECHNOLOGIES
INCORPORATED

EXHIBITS

TO



Annual Report on Form 10-K
                   Year ended December 31, 2005

EXHIBITS - TABLE OF CONTENTS



|Exhibit Number |                                                                                                                                                                                        
|-------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|Exhibit 4.3    | - Amended and Restated 1997 Employee Stock Purchase Plan
    PDF as a courtesy                                                                                                         
|Exhibit 10.4   | - Memorandum Regarding Exercise of Option to Extend
    PDF as a courtesy                                                                                                              
|Exhibit 10.5   | - Amendment dated June 30, 2005 to Bank agreement dated June 30, 2004 with Bank of The West
    PDF as a courtesy                                                                      
|Exhibit 21.1   | - Subsidiaries of the Registrant                                                                                                                                                       
|Exhibit 23.1   | - Consent of BDO Seidman, LLP, Independent Registered Public Accounting Firm                                                                                                           
|Exhibit 23.2   | - Consent of PricewaterhouseCoopers, LLP, Independent Registered Public Accounting Firm                                                                                                
|Exhibit 24.1   | - Power of Attorney (included on page 39)                                                                                                                                              
|Exhibit 31.1   | - Certification of Chief Executive Officer
    Pursuant To Section 302(a)
    of the Sarbanes-Oxley Act Of 2002                                                                        
|Exhibit 31.2   | - Certification of Chief Financial
    Officer Pursuant To Section 302(a)
    of the Sarbanes-Oxley Act Of 2002                                                                        
|Exhibit 32.1   | - Certification Of Chief Executive Officer And Chief Financial
    Officer Pursuant To 18 U.S.C. Section 1350, As Adopted Pursuant
    To Section 906 Of The Sarbanes-Oxley Act Of 2002

---