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                      STANDARD OFFICE LEASE AGREEMENT (NET)

     THIS LEASE AGREEMENT (hereinafter called the Lease Agreement") made as
     of the 27th day of NOVEMBER, 1996, by and between SECURITY LIFE
     INSURANCE COMPANY OF AMERICA, A MINNESOTA CORPORATION, having offices at
     3500 West 80th Street, Bloomington, Minnesota, 55431 hereinafter called
     the "Landlord"), and ELTRAX SYSTEMS, INC., A MINNESOTA CORPORATION
     (hereinafter called the "Tenant").

                                   WITNESSETH

          FOR AND IN CONSIDERATION of the sum of One Dollar ($1.00) in hand
     paid by each of the parties to the other, and other good and valuable
     consideration, receipt and sufficiency of which is hereby acknowledged,
     Landlord does hereby lease and let unto Tenant, and Tenant does hereby
     hire, lease and take from Landlord, that area outlined on Exhibit A-I
     attached hereto, and by this reference  incorporated herein,  and
     described  as  Suite 345, containing approximately 1,567 SQUARE FEET,
     (hereinafter called the "Premises") AT SHADY OAK OFFICE CENTER I,
     LOCATED AT 10901 RED CIRCLE DRIVE (hereinafter called the "Building") in
     the CITY OF MINNETONKA, COUNTY OF HENNEPIN, State of Minnesota. The term
     Building as it is used herein shall consist of the land and building(s)
     set forth in Exhibit A-2 hereto.

     ARTICLE 1-TERM

          To have and to hold said Premises for a term FIVE (5) YEARS,
     commencing NOVEMBER 27, 1996, and terminating NOVEMBER 30, 2001,
     (hereinafter called the "Term") upon the rentals and subject to (he
     conditions set forth in this Lease Agreement, and the Exhibits attached
     hereto.   The commencement and termination dates are specifically
     subject to the provisions of Article S hereof.

     ARTICLE 2-USE

          The Premises shall be used by the Tenant solely for the following
     purposes: GENERAL OFFICE PURPOSES.

     ARTICLE 3-RENTALS

          Tenant agrees to pay to Landlord as minimum rental (hereinafter
     called "Minimum Rental") for the Premises, without notice set-off or
     demand, the following sums per month, said monthly installments shall be
     due and payable by Tenant in advance on the first day of each calendar
     month during the Term of this Lease Agreement, or any extension or
     renewal thereof, at the office of Landlord set forth in the preamble to
     this Lease Agreement or at such other place as Landlord may designate.
     In the event of any fractional calendar month, Tenant shall pay for each
     day in such partial month a rental equal to 1/30 of the Minimum Rental.


          Month of Term    Monthly Minimum Rents    Rates Per Square Foot
          -------------    ---------------------    ---------------------
          01-36                 $2,364.86                  $18.11
          37-60                 $2,397.51                  $18.36

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          Tenant agrees to pay, as Additional Rent, which shall be
     collectible to the same extent as Minimum Rental, all amounts which may
     become due to Landlord hereunder and any tax, charge or fee that may be
     levied, assessed or imposed upon or measured by the rents reserved
     hereunder by any governmental authority acting under any present or
     future law before any fine, penalty, interest or costs may be added
     thereto for non-payment.   Pursuant to Article 6 hereof, Landlord's
     estimated Operating Expenses for 1996 are $2.27 per square foot and
     estimated Real Estate Taxes payable in 1996 are $5.34 per square foot.

     ARTICLE 4-CONSTRUCTION

          Plans and/or a description for permanent improvements to the
     Premises are attached hereto as Exhibit A-3 and by this reference
     incorporated herein hereafter called the "Plans").   The Plans have been
     approved by each of Landlord and Tenant.   The parties acknowledge that
     the Plans are to modify the premises to accommodate Tenant's intended
     use.   Landlord shall be responsible for constructing the improvements
     as shown on the Plans (hereafter called "Tenant Improvements") for and
     on behalf of Tenant.   Landlord and Tenant have agreed that the costs of
     such Tenant Improvements shall be paid by Tenant, although initially
     advanced by Landlord, with said costs to be reimbursed to Landlord by
     Tenant as part of Tenant's payments of Minimum Rental as set forth in
     Article 3 above.   Any improvements to the Premises, other than as shown
     on the Plans, and the furnishing of the Premises, shall be made by
     Tenant at the sole cost and expense of Tenant, subject to all other
     provisions of this Lease Agreement, including compliance with all
     applicable governmental laws, ordinances and regulations.   If the
     Tenant Improvements cannot be substantially completed prior to the
     commencement of the Term, then the provisions of Article 5 shall apply.

     ARTICLE 5-POSSESSION

     Except as otherwise provided, Landlord shall deliver possession of
     the Premises on or before the date hereinabove specified for
     commencement of the Term, but delivery of possession prior to such
     commencement date shall not affect the expiration date of this Lease
     Agreement. Failure of Landlord to deliver possession of the Premises
     by the date hereinabove provided, due to a holding over by a prior
     tenant, or any other cause beyond Landlord's control, or time
     required for construction delays due to material shortages,
     strikes, or acts of God, shall automatically postpone the date of
     commencement of the Term of this Lease Agreement and shall extend
     the termination date by periods equal to those which shall have
     elapsed between and including the date hereinabove specified for
     commencement of the Term hereof and the date on which possession of
     the Premises is delivered to the Tenant. The rentals herein
     reserved shall commence on the first day of the Term, provided,
     however, in the event of any occupancy by Tenant prior to the
     beginning of the Term, such occupancy shall in all respects be the same
     as that of a tenant under this Lease Agreement, and the rental shall
     commence as of the date that Tenant enters into such occupancy of
     the Premises. Provided further, that if Landlord shall be delayed
     in delivery of the Premises to Tenant due to Tenant's failure to
     agree to the Plans or any delay caused by a party employed by or
     the agent of Tenant, or by Tenant's failure to pay for the costs of
     the Tenant Improvements requested by Tenant subsequent to approval
     of the Plans, then


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     in such case the rental shall be accelerated by the number of days
     of such delay, and the rentals shall commence the same as if occupancy
     had been taken by Tenant.   Prior to the commencement of the Term,
     Landlord shall have no responsibility or liability for loss or damage to
     fixtures, facilities or equipment installed or left on the Premises.  By
     occupying the Premises as a Tenant, or to install fixtures, facilities
     or equipment, or to perform finishing work, Tenant shall be conclusively
     deemed to have accepted the same and to have acknowledged that the
     Premises are in the condition required by this Lease Agreement, except
     items which are not in compliance with Exhibit A-3 and for which Tenant
     has given Landlord a written "punch list" within thirty (30) days of
     Tenant's first occupancy of the Premises.   Should the commencement of
     the rental obligations of Tenant under this Lease Agreement occur for
     any reason on a day other than the first day of a calendar month, then
     in that event solely for the purposes of computing the Term of this
     Lease Agreement, the commencement date of the Term shall become and be
     the first day of the first full calendar month following the date when
     Tenant's rental obligation commences, or the first day of the first full
     calendar month following the commencement date set out in Article I (if
     such is other than the first date of a calendar month), whichever date
     is later, and the termination date shall be adjusted accordingly;
     provided however, that the termination date shall be the last day of a
     calendar month, which date shall in no event be earlier than the
     termination date set out in Article 1.   Immediately after Tenant's
     occupancy of the Premises the Landlord and Tenant shall execute a
     ratification agreement which shall set forth the final commencement and
     termination dates for the Term and shall acknowledge the Minimum Rental,
     the square footage of the Premises, and delivery of the Premises in the
     condition required by this Lease Agreement.

     ARTICLE 6-TENANT'S PRO RATA SHARE OF REAL ESTATE TAXES AND
     OPERATING EXPENSES

          A.   During each full or partial calendar year during the Term of
               this Lease Agreement, Tenant shall pay to Landlord, as Additional
               Rental, an amount equal to the Real Estate Taxes and Operating
               Expenses (both as hereinafter defined) per square foot of
               rentable area in the Building multiplied by the number of square
               feet of rentable area in the Premises prorated for the period
               that Tenant occupied the Premises. Notwithstanding the preceding
               sentence, Tenant's share of the following Operating Expenses
               shall be computed on the basis of the cost of said expenses per
               rentable square foot of area within the Building actually
               occupied: cleaning, management, and energy expenses.

          B.   Landlord shall, each year during the Term of this Lease
               Agreement, give Tenant an estimate of Operating Expenses and Real
               Estate Taxes payable per square foot of rentable area for the
               coming calendar year. Tenant shall pay, as Additional Rental,
               along with its monthly Minimum Rental payments required
               hereunder, one-twelfth (1/12) of such estimated Operating
               Expenses and Real Estate Taxes and such Additional Rental shall
               be payable until subsequently adjusted for the following year
               pursuant to this Article.


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          C.   As soon as possible after the expiration of each calendar year,
               Landlord shall determine and certify to Tenant the actual
               Operating Expenses and Real Estate Taxes for the previous year
               per square foot of rentable area in the Building and the amount
               applicable to the Premises. If such statement shows THAT Tenant's
               share of Operating Expenses and Real Estate Taxes exceeds
               Tenant's estimated monthly payments for the previous calendar
               year, then Tenant shall, within twenty (20) days after receiving
               Landlord's certification, pay such deficiency to Landlord. In the
               event of an overpayment by Tenant, such overpayment shall be
               refunded to Tenant, at the time of certification, in the form of
               an adjustment in the Additional Rental next coming due, or if at
               the end of the Term by a refund.

          D.   For the purposes of this Article, the term "Real Estate Taxes"
               means the total of all taxes, fees, charges and assessments,
               general and special, ordinary and extraordinary, foreseen or
               unforeseen, which become due or payable upon the Building. All
               costs and expenses incurred by Landlord during negotiations for
               or contests of the amount of Real Estate Taxes shall be included
               within the term "Real Estate Taxes." For purposes of this
               Article, the term "Operating Expenses" shall be deemed to mean
               all costs and expenses directly related to the Building incurred
               by Landlord in the repair, operation, management and maintenance
               of the Building including interior and exterior and common area
               maintenance, management fees, cleaning expenses, energy expenses,
               insurance premiums, and the amortization of capital investments
               made to reduce operating costs or that are necessary due to
               governmental requirements, all in accordance with generally
               accepted accounting principles.

          E.   Landlord may at any time designate a fiscal year in lieu of a
               calendar year and in such event, at the time of such a change,
               there may be a billing for the fiscal year which is less than 12
               calendar months.

          F.   Landlord reserves, and Tenant hereby assigns to Landlord, the
               sole and exclusive right to contest, protest, petition for
               review, or otherwise seek a reduction in the Real Estate Taxes.

     ARTICLE 7-UTILITIES AND SERVICE

          A.   Landlord agrees to furnish water, electricity, elevator
               service, and janitorial service. In the event Tenant's
               requirements and/or usage of such utilities and services is
               substantially greater than is customarily supplied to a
               typical tenant in the Building, Landlord or Tenant may request
               that the difference in such requirement and/or usage be
               determined and that appropriate adjustments be made in the
               Minimum Rental provided for in Article 3 of this Lease
               Agreement.

          B.   Landlord agrees to furnish heat during the usual heating
               season and air conditioning during the usual air conditioning
               season, all during normal business hours as defined in this
               Lease Agreement.

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<PAGE>

          C.   No temporary interruption or failure of such services incidental
               to the making of repairs, alterations or improvements, or due to
               accidents or strike or conditions or events not under Landlord's
               control, shall be deemed as an eviction of the Tenant or relieve
               the Tenant from any of the Tenant's obligations hereunder.
               Notwithstanding the foregoing, in the event any interruption or
               failure or such services is the result of Landlord's negligence
               or willful misconduct and such interruption or failure of
               services continues for five (5) consecutive business days, Tenant
               shall be entitled to an equitable abatement of Minimum Rental and
               Additional Rental for so long as such interruption or failure
               shall materially interfere with Tenant's ability to conduct its
               business operations in the Premises and, in fact, Tenant does not
               conduct its business operations in the Premises.

          D.   For the purposes of this Article 7, normal business hours shall
               be deemed to mean the period of time between 8:00 a.m. and
               5:00 p.m., Monday through Friday, and specifically excluding
               Saturdays, Sundays and legal holidays.

     ARTICLE 8-NON-LIABILITY OF LANDLORD

          Except in the event of negligence or intentional acts of Landlord, its
agents, employees or contractors, Landlord shall not be liable for any loss or
damage for failure to furnish heat, air conditioning, electricity, elevator
service, water, sprinkler system or janitorial service. Landlord shall not be
liable for personal injury, death or any damage from any cause about the
Premises or the Building except if caused by Landlord's gross negligence or
intentional acts.

     ARTICLE 9-CARE OF PREMISES

          A.   Tenant agrees:

               1.   To keep the Premises in as good condition and repair as they
                    were in at the time Tenant took possession of same,
                    reasonable wear and tear and damage from fire and other
                    casualty excepted;

               2.   To keep the Premises in a clean and sanitary condition;

               3.   Not to commit any nuisance or waste on the Premises,
                    overload the Premises or the electrical, water and/or
                    plumbing facilities in the Premises or Building, throw
                    foreign substances in plumbing facilities, or waste any of
                    the utilities furnished by Landlord;

               4.   To abide by such rules and regulations as may from time
                    to time be reasonably promulgated by Landlord;

               5.   To preserve and protect all carpeted areas and to provide
                    and use carpet protector mats in all locations within the
                    Premises where chairs with castors are used; and


                                       5

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          6.    To obtain Landlord's prior approval of the interior design of
                any portion of the Premises visible from the common areas or
                from the outside of the Building.  "Interior design as used in
                the preceding sentence shall include but not be limited to floor
                and wall coverings, furniture office design, artwork and color
                scheme.

     B.   If Tenant shall fail to keep and preserve the Premises in the state of
          condition required by the provisions of this Article 9, the Landlord
          may at it option put or cause the same to be put into the condition
          and state of repair agreed upon, and in such case the Tenant, on
          demand, shall pay the cost thereof.

ARTICLE 10-NON-PERMITTED USE

     Tenant agrees to use the Premises only for the purposes set forth in
Article 2 hereof.   Tenant further agrees not to commit or permit any act to be
performed on the Premises or any omission to occur which shall be in violation
of any statute, regulation or ordinance of any governmental body or which will
increase the insurance rates on the Building or which will be in violation of
any insurance policy carried on the Building by the Landlord.   Tenant, at its
expense, shall comply with all governmental laws, ordinances, rules and
regulations applicable to the use of the Premises and its occupancy and shall
promptly comply with all governmental orders, rulings and directives for the
correction, prevention and abatement of any violation upon, or in connection
with the Premises or Tenant's use or occupancy of the Premises, including the
making of any alterations or improvements to the Premises, all at Tenant's sole
cost and expense.   The Tenant shall not disturb other occupants of the Building
by making any undue or unseemly noise or otherwise and shall not do or permit to
be done in or about the Premises anything which will be dangerous to life or
limb.

ARTICLE 11-INSPECTION

     The Landlord or its employees or agents shall have the right without any
diminution of rent or other charges payable hereunder by Tenant to enter the
Premises at all reasonable times with reasonable prior notice, except in the
case of emergency, for the purpose of exhibiting the Premises to prospective
tenants or purchasers, inspection, cleaning, repairing, testing, altering or
improving the same or said Building, but nothing contained in this Article shall
be construed so as to impose any obligation on the Landlord to make any repairs,
alterations or improvements.

ARTICLE 12-ALTERATIONS

     Tenant will not make any alterations, repairs, additions or improvements in
or to the Premises or add, disturb or in any way change any plumbing, wiring,
life/safety or mechanical systems, locks, or structural components of the
Building without the prior written consent of the Landlord as to the character
of the alterations, additions or improvements to be made, the manner of doing
the work, and the contractor doing the work.   Such consent shall not be
unreasonably withheld or delayed, if such alterations, repairs, additions or
improvements are required of

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Tenant or are the obligation of Tenant pursuant to this Lease Agreement.
All such work shall comply with all applicable governmental laws, ordinances,
rules and regulations.   The Landlord as a condition to said consent may
require a surety performance and/or payment bond from the Tenant for said
actions.   Tenant agrees to indemnify and hold Landlord free and harmless
from any liability, loss, cost, damage or expense (including attorney's fees)
by reasons of any said alteration, repairs, additions or improvements.

ARTICLE 13-SIGNS

     Tenant agrees that no signs or other advertising materials shall be
erected, attached or affixed to any portion of the interior or exterior of the
Premises or the Building without the express prior written consent of Landlord.

ARTICLE 14-COMMON AREAS

     A.   Tenant agrees (hat the use of all corridors, passageways, elevators,
          toilet rooms, parking areas and landscaped area in and around said
          Building, by the Tenant or Tenant's employees, visitors or invitees,
          shall be subject to such rules and regulations as may from time to
          time be made by Landlord for the safety, comfort and convenience of
          the owners, occupants, tenants and invitees of said Building.   Tenant
          agrees that no awnings, curtains, drapes or shades shall be used upon
          the Premises except as may be approved by Landlord.

     B.   In addition to the Premises, Tenant shall have the right of non-
          exclusive use, in common with others, of (a) all unrestricted
          automobile parking areas, driveways and walkways, and (b) loading
          facilities, freight elevators and other facilities as may be
          constructed in the Building, all to be subject to the terms and
          conditions of this Lease Agreement and to reasonable rules and
          regulations for the use thereof as prescribed from time to time by
          Landlord.

     C.   Landlord shall have the right to make changes or revisions in the site
          plan and in the Building so as to provide additional leasing area.
          Landlord shall also have the right to construct additional buildings
          on the land described on Exhibit A-2 for such purposes as Landlord may
          deem appropriate.   Landlord also reserves all airspace rights above,
          below and to all sides of the Premises, including the right to make
          changes, alterations or provide additional leasing areas.

     D.   Landlord and Tenant agree that Landlord will not be responsible for
          any loss, theft or damage to vehicles, or the contents thereof, parked
          or left in the parking areas of the Building and Tenant agrees to so
          advise its employees, visitors or invitees who may use such parking
          areas.   The parking areas shall include those areas designated by
          Landlord, in its sole discretion, as either restricted or unrestricted
          parking areas.   Any restricted parking areas shall be leased only by
          separate license agreement with Landlord.   Tenant further agrees not
          to use or permit its

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          employees, visitors or invitees to use the parking areas for overnight
          storage of vehicles.

ARTICLE 15-ASSIGNMENT AND SUBLETTING

     A.   Tenant agrees not to assign, sublet, license, mortgage or encumber
          this Lease Agreement, the Premises, or any part thereof, whether by
          voluntary act, operation of law, or otherwise, without the specific
          prior written consent of Landlord in each instance.   If Tenant is a
          corporation or a partnership, transfer of a controlling interest of
          Tenant shall be considered an assignment of this Lease Agreement for
          purposes of this Article.   Consent by Landlord in one such instance
          shall not be a waiver of Landlord's rights under this Article as to
          requiring consent for any subsequent instance.   In the event Tenant
          desires to sublet a part or all of the P Premises or assign this Lease
          Agreement, Tenant shall give written notice to Landlord at least
          thirty (30) days prior to the proposed subletting or assignment, which
          notice shall state the name of the proposed subtenant or assignee, the
          terms of any sublease or assignment documents and copies of financial
          reports or other relevant financial information of the proposed
          subtenant or assignee.   At Landlord's option, any and all payments by
          the proposed assignee or sublessee with respect to the assignment of
          sublease shall be paid directly to Landlord.   In any event no
          subletting or assignment shall release Tenant of its obligation to pay
          the rent and to perform all other obligations to be performed by
          Tenant hereunder for the Term of this Lease Agreement.   The
          acceptance of rent by Landlord from any other person shall not be
          deemed to be a waiver by Landlord of any provision hereof.   At
          Landlord's option, Landlord may terminate the Lease Agreement in lieu
          of giving its consent to any proposed assignment of this Lease
          Agreement or subletting of the Premises (which termination may be
          contingent upon the execution of a new lease with the proposed
          assignee or subtenant).

     B.   Landlord's right to assign this Lease Agreement is and shall remain
          unqualified upon any sale or transfer of the Building and, providing
          the purchaser succeeds to the interests of Landlords under this Lease
          Agreement, Landlord shall thereupon be entirely freed of all
          obligations of the Landlord hereunder and shall not be subject to any
          liability resulting from any act or omission or event occurring after
          such conveyance.

ARTICLE 16-LOSS BY CASUALTY

     If the Building is damaged or destroyed by fire or other casualty, the
Landlord shall have the right to terminate this Lease Agreement, provided it
gives written notice thereof to the Tenant within ninety (90) days after such
damage or destruction.   If a portion of the Premises or Building is damaged by
fire or other casualty, and Landlord does not elect to terminate this Lease
Agreement, the Landlord shall, at its expense, restore the Premises to as near
the condition which existed immediately prior to such damage or destruction, as
reasonably possible, and the rentals shall abate during such period of time as
the Premises are untenantable, in the proportion that the

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untenantable portion of the Premises bears to the entire Premises.
Notwithstanding the above, Tenant shall have the right to terminate this
Lease if repairs to the Premises are not completed within one hundred eighty
(180) days of the casualty.

ARTICLE 17-WAIVER OF SUBROGATION

     Landlord and Tenant hereby release the other from any and all liability or
responsibility to the other or anyone claiming through or under them by way of
subrogation or otherwise for any loss or damage to property caused by fire or
any of the extended coverage or supplementary contract casualties, even if such
fire or other casualty shall have been caused by the fault or negligence of the
other party, or anyone for whom such party may be responsible, provided however,
that this release shall be applicable and in force and effect only with respect
to loss or damage occurring during such times as the releasing party's policies
shall contain a clause or endorsement to the effect that any such release would
not adversely affect or impair said policies or prejudice the right of lie
releasing party to recover thereunder.   Landlord and Tenant agree that they
will request their insurance carriers to include in their policies such a clause
or endorsement.   If extra cost shall be charged therefore, each party shall
advise the other of the amount of the extra cost, and the other party, at its
election, may pay the same, but shall not be obligated to do so.

ARTICLE 18-EMINENT DOMAIN

     If the entire Building is taken by eminent domain, this Lease Agreement
shall automatically terminate as of the date of taking.   If a portion of the
Building is taken by eminent domain, the Landlord shall have the right to
terminate this Lease Agreement, provided it gives written notice thereof to the
Tenant within ninety (90) days after the date of taking.   If a portion of the
Premises or Building is taken by eminent domain and this Lease Agreement is not
terminated by Landlord, the Landlord shall, at its expense, restore the Premises
to as near the condition which existed immediately prior to the date of taking
as reasonably possible, and the rentals shall abate during such period of time
as the Premises are untenantable, in the proportion that the untenantable
portion of the Premises bears to the entire Premises.   All damages awarded for
such taking under the power of eminent domain shall belong to and be the sole
property of Landlord, irrespective of the basis upon which they are awarded,
provided, however, that nothing contained herein shall prevent Tenant from
making a separate claim to the condemning authority for its moving expenses and
trade fixtures.   For purposes of this Article, a taking by eminent domain shall
include Landlord's giving of a deed under threat of condemnation.
Notwithstanding the above, Tenant shall have the right to terminate this Lease
if repairs to the Premises are not completed within one hundred eighty (180)
days of the casualty.

ARTICLE 19-SURRENDER

     On the last day of the Term of this Lease Agreement or on the sooner
termination thereof in accordance with the terms hereof, Tenant shall peaceably
surrender the Premises in good condition and repair consistent with Tenant's
duty to make repairs as provided in Article 9 hereof.   On or before said last
day, Tenant shall at its expense remove all of its equipment from

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the Premises, repairing any damage caused thereby, and any property not
removed shall be deemed abandoned.   All alterations, additions and fixtures
other than Tenant's trade fixtures, which have been made or installed by
either Landlord or Tenant upon the Premises shall remain as Landlord's
property and shall be surrendered with the Premises as a part thereof, or
shall be removed by Tenant, at the option of Landlord, in which event Tenant
shall at its expense repair any damage caused thereby.   It is specifically
agreed that any and all telephonic, coaxial, ethernet, or other computer,
word-processing, facsimile, or electronic wiring installed by Tenant within
the Premises (hereafter "Wiring") shall be removed at Tenant's cost at the
expiration of the Term, unless Landlord has specifically requested in writing
that said Wiring shall remain, whereupon said Wiring shall be surrendered
with the Premises as Landlord's property.   If the Premises are not
surrendered at the end of the Term or the sooner termination thereof, Tenant
shall indemnify Landlord against loss or liability resulting from delay by
Tenant in so surrendering the Premises, including, without limitation, claims
made by any succeeding tenant founded on such delay.   Tenant shall promptly
surrender all keys for the Premises to Landlord at the place then fixed for
payment of rental and shall inform Landlord of combinations on any locks and
safes on the Premises.

ARTICLE 20-NON-PAYMENT OF RENT, DEFAULTS

     If any one or more of the following occurs: (1) a rent payment or any other
payment due from Tenant to Landlord shall be and remain unpaid in whole or in
part for more than ten (10) days after same is due and payable; (2) Tenant shall
violate or default on any of the other covenants, agreements, stipulations or
conditions herein, or in any parking agreement(s) or other agreements between
Landlord and Tenant relating to the Premises, and such violation or default
shall continue for a period of) thirty (30) days after written notice from
Landlord of such violation or default; (3) if Tenant shall commence or have
commenced against Tenant proceedings under a bankruptcy, receivership,
insolvency or similar type of action; or (4) if Tenant shall vacate any
substantial portion of the Premises for a period of more than 15 days; then it
shall be optional for Landlord, without further notice or demand, to cure such
default or to declare this Lease Agreement forfeited and the said Term ended, or
to terminate only Tenant's right to possession of the Premises, and to re-enter
the Premises, with or without process of law, using such force as may be
necessary to remove all persons or chattels therefrom, and Landlord shall not be
liable for damages by reason of such re-entry or forfeiture; but notwithstanding
re-entry by Landlord or termination only of Tenant's right to possession of the
Premises, the liability of Tenant for the rent and all other sums provided
herein shall not be relinquished or extinguished for the balance of the Term of
this Lease Agreement and Landlord shall be entitled to periodically sue Tenant
for all sums due under this Lease Agreement or which become due prior to
judgment,  but such suit shall not bar subsequent suits for any further sums
coming due thereafter.   Tenant shall be responsible for, in addition to the
rentals and other sums agreed to be paid hereunder, the cost of any necessary
maintenance, repair, restoration, reletting (including related cost of removal
or modification of tenant improvements) or cure as well as reasonable attorney's
fees incurred or awarded in any suit or action instituted by Landlord to enforce
the provisions of this Lease Agreement, regain possession of the Premises, or
the collection of the rentals due Landlord hereunder, Tenant shall also be
liable to Landlord for the payment of a late charge in the amount of 5% of the
rental installment or other sum due Landlord hereunder if said

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payment has not been received within ten (10) days from the date said payment
becomes due and payable.  Tenant agrees to pay interest at the highest
permissible rate of interest allowed under the usury statutes of the State of
Minnesota, or in case no such maximum rate of interest is provided, at the
rate of 12% per annum, on all rentals and other sums due Landlord hereunder
not paid within ten (10) days from the date same become due and payable.
Each right or remedy of Landlord provided for in this Lease Agreement shall
be cumulative and shall be in addition to every other right or remedy
provided for in this Lease Agreement now or hereafter existing at law or in
equity or by statute or otherwise.

ARTICLE 21-LANDLORD'S DEFAULT

     Landlord shall not be deemed to be in default under (his Lease Agreement
until Tenant has given Landlord written notice specifying the nature of the
default and Landlord does not cure such default within thirty (30) days after
receipt of such notice or within such reasonable time thereafter as may b
necessary to cure such default where such default is of such a character as
to reasonably require more than thirty (30) days to cure.

ARTICLE 22-HOLDING OVER

     Tenant will, at the expiration of this Lease Agreement, whether by lapse
of time or termination, give up immediate possession to Landlord.  If Tenant
fails to give up possession the Landlord may, at its option, serve written
notice upon Tenant that such holdover constitutes any one of (i) creation of
a month-to-month tenancy, or (ii) creation of a tenancy at sufferance.  If
Landlord does not give said notice, Tenant's holdover shall create a tenancy
at sufferance.  In any such event the tenancy shall be upon the terms and
conditions of this Lease Agreement, except that the Minimum Rental shall be
double the Minimum Rental Tenant was obligated to pay Landlord under this
Lease Agreement immediately prior to termination (in the case of tenancy at
sufferance such Minimum Rental shall be prorated on the basis of a 365 day
year for each day: Tenant remains in possession); excepting further that in
the case of a tenancy at sufferance, no notices shall be required prior to
commencement of any legal act ion to gain repossession of the Premises.  In
the case of a tenancy at sufferance, Tenant shall also pay to Landlord all
damages sustained by Landlord resulting from retention of possession by
Tenant.  The provisions of this paragraph shall not constitute a waiver by
Landlord of any right of re-entry a: otherwise available to Landlord; nor
shall receipt of any rent or any other act in apparent affirmance of the
tenancy operate as a waiver of the right to terminate this Lease Agreement
for a breach by Tenant hereof.

ARTICLE 23-SUBORDINATION

     Tenant agrees that this Lease Agreement shall be subordinate to any
mortgage(s) that may now or hereafter be placed upon the Building or any part
thereof, and to any and all advances to be made thereunder, and to the
interest thereon, and all renewals, replacements, and extensions thereof,
provided the mortgagee named in such mortgage(s) shall agree to recognize
this Lease Agreement or Tenant in the event of foreclosure provided the
Tenant is not in default In confirmation of such subordination, Tenant shall
promptly execute and deliver any instrument,


                                     11

<PAGE>

in recordable form, as required by Landlord's mortgagee In the event of any
mortgagee electing to have the Lease Agreement a prior incumbrance to its
mortgage, then and in such event upon such mortgage notifying Tenant to that
effect, this Lease Agreement shall be deemed prior in incumbrance to the said
mortgage, whether this Lease Agreement is dated prior to or subsequent to the
date of said mortgage.

ARTICLE 24-INDEMNITY, INSURANCE AND SECURITY

     A.   Tenant will keep in force at its own expense for so long as this Lease
          Agreement remains in effect public liability insurance with respect to
          the Premises in which Landlord shall be named as an additional
          insured, in companies and in form acceptable to Landlord with a
          minimum combine limit of liability of Two Million Dollars
          ($2,000,000.00).  This limit shall apply per location.  Said
          insurance shall also provide for ,contractual liability: coverage by
          endorsement.  Tenant will further deposit with Landlord the policy or
          policies of such insurance or certificates thereof, or other
          acceptable evidence that such insurance is in effect, which evidence
          shall provide that Landlord shall be notified in writing thirty (30)
          days prior to cancellation, material change, or failure to renew the
          insurance.  Tenant further covenants and agrees to indemnify and hold
          Landlord and Landlord's manager of the Building harmless for any
          claim, loss o damage, including reasonable attorney's fees, suffered
          by Landlord, Landlord's manager or Landlord's other tenants caused by:
          i) any act or omission b: Tenant, Tenant's employees or anyone
          claiming through or by Tenant in, at, or around the Premises or the
          Building; ii) the conduct or management of an: work or thing
          whatsoever done by Tenant in or about the Premises; or iii) Tenant's
          failure to comply with any and all governmental laws, rules,
          ordinances o regulations applicable to the use of the Premises and its
          occupancy.  If Tenant shall not comply with its covenants made in
          this Article 24, Landlord may, at it option, cause insurance as
          aforesaid to be issued and in such event Tenant agrees to pay the
          premium for such insurance promptly upon Landlord's demand.

     B.   Tenant shall be responsible for the security and safeguarding of the
          Premises and all property kept, stored or maintained in the Premises.
          Landlord will make available to Tenant, at Tenant's request, the plans
          and specifications for construction of the Building and the Premises.
          Tenant represent that it is satisfied that the construction of the
          Building and the Premises, including the floors, walls, windows, doors
          and means of access thereto are suitable for the particular needs of
          Tenant's business.  Tenant further represents that it is satisfied
          with the security of said Building and Premises for the protection of
          a[tilde] property which may be owned, held, stored or otherwise caused
          or permitted by Tenant to be present upon the Premises.   The
          placement and sufficiency of al safes, vaults, cash or security
          drawers, cabinets or the like placed upon the Premises by Tenant shall
          be at the sole responsibility and risk of Tenant.  Tenant shall
          maintain in force throughout the Term, insurance upon all contents of
          the Premises, including that owned by others and Tenant's equipment
          ant any alterations, additions,


                                     12

<PAGE>

          fixtures, or improvements in the Premises acknowledged by Landlord to
          be the Tenants.

     C.   Landlord shall carry and cause to be in full force and effect a fire
          and extended coverage insurance policy on the Building, but not
          contents owned leased or otherwise in possession of Tenant.  The cost
          of such insurance shall be an Operating Expense.

ARTICLE 25-NOTICES

     All notices from Tenant to Landlord required or permitted by any
provisions of this Lease Agreement shall be directed to Landlord postage
prepaid, certified or registered mail, at the address provided for Landlord
in the preamble to this Lease Agreement or at such other address as Tenant
shall be advised to use by Landlord.  All notices from Landlord to Tenant
required or permitted by any provision of this Lease Agreement shall be
directed to Tenant, postage prepaid, certified or registered mail, at the
Premises and at the address, if any, set forth on page 6 of this Lease
Agreement.  Landlord and Tenant shall each have the right at any time and
from time to time to designate one (1) additional party to whom copies of any
notice shall be sent.

ARTICLE 26-APPLICABLE LAW

     This Lease Agreement shall be construed under the laws of the State of
Minnesota.

ARTICLE 27-MECHANICS' LIEN

     In the event any mechanic's lien shall at any time be filed against the
Premises or any part of the Building by reason of work, labor, services or
materials performed or furnished to Tenant or to anyone holding the Premises
through or under Tenant, Tenant shall forthwith cause the same to be
discharged of record.  If Tenant shall fail to cause such lien forthwith to
be discharged within five (5) days after being notified of the filing
thereof, then, in addition to any other right or remedy of Landlord, Landlord
may, but shall not be obligated to, discharge the same by paying the amount
claimed to be due, or by bonding, and the amount so paid by Landlord and all
costs and expenses, including reasonable attorney's fees incurred by Landlord
in procuring the discharge of such lien, shall be due and payable in full by
Tenant to Landlord on demand.

ARTICLE 28-SECURITY INTEREST

[TEXT WAS STRUCK OUT]

ARTICLE 29-BROKERAGE

     Each of the parties represents and warrants that there are no claims for
brokerage commissions or finder's fees in connection with this Lease
Agreement and agrees to indemnify


                                     13

<PAGE>

the other against, and hold it harmless from all liabilities arising from any
such claim, including without limitation, the cost o attorney's fees in
connection therewith.

ARTICLE 30-SUBSTITUTION

     Landlord reserves the right, on thirty (30) days written notice to
Tenant, to substitute other premises within the Building for the Premises
hereunder.  The substituted premises shall contain substantially the same
square footage as the Premises, shall contain comparable improvements, and
the Minimum Rental shall not exceed the Minimum Rental specified in Article 3
hereof.  Landlord shall pay the expenses reasonably incurred by Tenant in
connection with such substitution of Premises, including but not limited to
costs of moving, door lettering, telephone relocation and, if necessary, one
month's supply of new stationery.

ARTICLE 31-ESTOPPEL CERTIFICATES

     Each party hereto agrees that at any time, and from time to time during
the Term of this Lease Agreement (but not more often than twice in each
calendar year), within ten (10) days after request by the other party hereto,
it will execute, acknowledge and deliver to such other party or to an
prospective purchaser, assignee or mortgagee designated by such other party,
an estoppel certificate in a form acceptable to Landlord.  Tenant agrees to
provide Landlord (but not more often than twice in any calendar year), within
ten (10) days of request, the then most current financial statements of
Tenant and an guarantors of this Lease Agreement, which shall be certified by
Tenant, and if available, shall be audited and certified by a certified
public accountant.  Landlord shall keep such financial statements
confidential, except Landlord shall, in confidence, be entitled to disclose
such financial statements to existing or prospective mortgagees or purchasers
of the Building.

ARTICLE 32-GENERAL

     This Lease Agreement does not create the relationship of principal and
agent or of partnership or of joint venture or of any association between
Landlord and Tenant, the sole relationship between Landlord and Tenant being
that of landlord and tenant.  No waiver of any default of Tenant hereunder
shall be implied from any omission by Landlord to take any action on account
of such default if such default persists or is repeated, and no express
waiver shall affect any default other than the default specified in the
express waiver and that only for the time and to the extent therein stated.
The covenants of Tenant to pay the Minimum Rental and the Additional Rental
are each independent of any other covenant, condition, or provision contained
in this Lease Agreement The marginal or topical headings of the several
Articles, paragraphs and clauses are for convenience only and do not define,
limit or construe the contents ( such Articles, paragraphs or clauses.  All
preliminary negotiations are merged into and incorporated in this Lease
Agreement.  This Lease Agreement can only be modified or amended by an
agreement in writing signed by the parties hereto.  All provisions hereof
shall be binding upon the heirs, successors an assigns of each party hereto.
If any term or provision of this Lease Agreement shall to any extent be held
invalid or unenforceable, the remainder shall not be affected thereby, and
each other term and provision of this Lease Agreement shall be valid and be
enforced to the


                                     14

<PAGE>

fullest extent permitted by law.  Tenant is a corporation, each individual
executing this Lease Agreement on behalf of said corporation represents and
warrants that he is duly authorized execute and deliver this Lease Agreement
on behalf of said corporation in accordance with a duly adopted resolution of
the Board of Directors of said corporation or in accordance with the Bylaws
of said corporation, and that this Lease Agreement is binding upon said
corporation in accordance with its term.  No receipt or acceptance by
Landlord from Tenant of less than the monthly rent herein stipulated shall be
deemed to be other than a partial payment or account for any due and unpaid
stipulated rent; no endorsement or statement of any check or any letter or
other writing accompanying any cheek or payment of rent to Landlord shall be
deemed an accord and satisfaction, and Landlord may accept and negotiate such
check or payment without prejudice Landlord's rights to (i) recover the
remaining balance of such unpaid rent or (ii) pursue any other remedy
provided in this Lease Agreement.  (Neither party shall record this Lease
Agreement or any memorandum thereof, and any such recordation shall be a
breach of this Lease Agreement void, and without effect.)  Time is of the
essence with respect to the due performance of the terms, covenants and
conditions herein contained.  Submission of this instrument for examination
does not constitute a reservation of or option for the Premises, and this
Lease Agreement shall become effective only upon execution an delivery
thereof by Landlord and Tenant.

ARTICLE 33-EXCULPATION

     Tenant agrees to look solely to Landlord's interest in the Building for
the recovery of any judgment from Landlord, it being agreed that Landlord and
Landlord's partners, whether general or limited (if Landlord is a
partnership) or its directors, officers or shareholders (if Landlord is a
corporation), shall never be personally liable for any such judgment.

ARTICLE 34-OPTION TO RENEW

     Tenant shall have the right to extend the Term of this Lease Agreement
for one (1) additional period of five (5) years (the "Renewal Term") upon the
following terms and conditions:

     A.   That Tenant is not in default in the performance of any of the terms,
          covenants, or conditions of this Lease Agreement either at the time
          its exercise of its rights hereunder or at the time of the
          commencement of the Renewal Term;

     B.   That any extension of the Term hereunder shall be on the same terms
          and conditions herein contained except for Article 4 and this Article
          34, and except that the annual Minimum Rental payable for the Renewal
          Term shall be at the market rate for comparable space in comparable
          suburban office buildings in Hennepin County as reasonably determined
          by Landlord giving due consideration to any improvements to any
          Premise for the Renewal Term requested by Tenant;

     C.   That Tenant shall exercise its right to extend the Term of this Lease
          Agreement by giving written notice to Landlord of its intention to do
          so no later than six (6)


                                     15

<PAGE>

          months prior to the end of the initial Term. The parties agree that
          time is of the essence in exercising Tenant's rights hereunder and
          accordingly, if Tenant fails to timely notify Landlord in the manner
          herein provided, Tenant's rights to extend the Term as provided for
          herein shall automatically expire; and

     D.   Tenant's rights under this Article 34 are personal and shall become
          null and void and of no force or effect in the event Tenant assigns
          this Lease Agreement or sublets the Premises.


     IN WITNESS WHEREOF, this Lease Agreement has been duly executed by the
parties hereto as of the day and year indicated above.

TENANT:                                 LANDLORD:

ELTRAX SYSTEMS, INC.,                   SECURITY LIFE INSURANCE COMPANY OF
a Minnesota corporation                 AMERICA,
                                        a Minnesota corporation

By:  /s/ Mack V. Traynor, III           By:  /s/ Charles R. Carlson
    -------------------------                ----------------------
Its:  President and CEO                 Its:
    -------------------------                ----------------------


                                      -16-

<PAGE>

                                 EXHIBIT A-1



                              [MAP OF PREMISES]


                                      -17-

<PAGE>

                                 EXHIBIT A-2

                              LEGAL DESCRIPTION

     Lot 7, Block 11, Opus 2 Fourth Addition, according to the recorded
     plat thereof, and situated in Hennepin County, Minnesota.

Part of above premises is registered land as evidenced by Certificate of Title
No.  602504.

The registered portion of premises is described as follows:

     That part of Lot 7, Block 11, Opus 2 Fourth Addition, lying Northerly
     of the Southerly line of Opus II 1st Addition, according to the plat
     thereof on file and of record in the Office of the Register of Deeds,
     in and for Hennepin County, Minnesota.


                                      -18-

<PAGE>

                                   EXHIBIT A-3

                              LEASEHOLD IMPROVEMENTS

Landlord makes no representation or agreement with respect to the condition
or improvements of the Premises under or by reason of this Lease except that
Landlord shall perform, at its expense, certain leasehold improvement work
(the "Work") to the Premises shown or described in this Exhibit A-3.   All
improvements shall be done in a quality, workmanlike manner using building
standard material.   Tenant shall be responsible for all costs associated
with changes to the Floor Plan requested by Tenant.   The parties acknowledge
that Tenant will occupy Suite 345 pursuant to this Lease prior to completion
of Tenant Improvements.   Accordingly, Landlord shall be completing Tenant
Improvements in portions of the Premises following Tenant's occupancy of the
Premises.   All work is to be done during normal business hours.   Landlord
shall make reasonable efforts to not unreasonably interfere with Tenant's
business.  Tenant hereby grants a license to Landlord to enter the Premises
to perform such work, all without setoff reduction or abatement in the rent.
Tenant shall cooperate with Landlord in making available portions of the
Premises necessary to perform said work free of personal property, equipment
and employees of Tenant.  Upon completion of such work, Tenant shall be
deemed to have conclusively accepted the same as being in conformance with
the provisions of this Lease, except for those matters for which Tenant has
given Landlord written notice within thirty (30) days of completion of such
work.

Landlord shall complete the following Work as specified as below:

               A.   Provide for floor plan necessary to design and build space
                    and secure necessary permits for construction of the
                    Premises.

               B.   Perform necessary demolition and construct new walls as
                    indicated on Floor Plan.

               C.   Paint all new construction walls within the Premises to
                    match existing.

               D.   Install new building standard carpet in areas noted on Floor
                    Plan.

               E.   Ceiling to be patched with building standard ceiling tile
                    and grid where demolition occurs.

               F.   Relocate and install new building light fixtures as required
                    to accommodate Floor Plan.

               G.   Provide building standard electrical outlets, dedicated
                    circuits, light switches, phone openings (wiring by Tenant)
                    and electrical demolition as required to accommodate Floor
                    Plan.

               H.   Modify HVAC system as required to accommodate Floor Plan.


                                      -19-

<PAGE>

These specifications are based on the plans dated 11/26/96 prepared by Jafvert
Mueller Architects, Inc.


                                   [FLOOR PLAN]


                                      -20-