SECURITIES AND EXCHANGE COMMISSION

                             WASHINGTON, D.C. 20549

                                  ------------

                                   FORM 10-K/A
                                (AMENDMENT NO. 1)

/X/    ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES
       EXCHANGE ACT OF 1934

                   FOR THE FISCAL YEAR ENDED DECEMBER 31, 1999

                                       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: 1-12727

                                -----------------

                          SENTRY TECHNOLOGY CORPORATION

           (EXACT NAME OF THE REGISTRANT AS SPECIFIED IN ITS CHARTER)

                DELAWARE                        96-11-3349733
  -------------------------------              ---------------
  (STATE OR OTHER JURISDICTION OF              (I.R.S. EMPLOYER
  INCORPORATION OR ORGANIZATION)               IDENTIFICATION NO.)

                350 WIRELESS BOULEVARD, HAUPPAUGE, NEW YORK 11788
               --------------------------------------------------
               (ADDRESS OF PRINCIPAL EXECUTIVE OFFICES) (ZIP CODE)

       REGISTRANT'S TELEPHONE NUMBER, INCLUDING AREA CODE: (631) 232-2100

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

           Securities registered pursuant to Section 12(g) of the Act:

                              TITLE OF EACH CLASS:

                          Common Stock, $.001 par value

                    Class A Preferred Stock, $.001 par value

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 such reports) and (2) has been subject to such filing
requirements for the past 90 days. Yes /x/  No / /

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405
of Regulation S-K is not contained herein, and will not be contained, to the
best of the Registrant's knowledge, in definitive proxy or information
statements incorporated by reference in Part III of this Form 10-K or any
amendment to this Form 10-K. Yes /x/  No / /

At April 28, 2000, the aggregate market value of the voting stock held by
non-affiliates of the Registrant was approximately $1,488,000 based upon the
closing price of such securities on the OTC Bulletin Board on that date. At
April 28, 2000, the Registrant had outstanding 9,750,760 shares of Common Stock
and 5,333,334 shares of Class A Preferred Stock.

DOCUMENTS INCORPORATED BY REFERENCE

None.


<PAGE>


                                EXPLANATORY NOTE

          Because definitive proxy soliciting material relating to the Annual
Meeting of Stockholders of Sentry Technology Corporation (the "Company" or
"Sentry") will be filed later than May 1, 2000, the information called for by
Items 10, 11, 12 and 13 of Part III of the Company's Form 10-K for the year
ended December 31, 1999 is included in this Amendment No. 1 on Form 10-K/A to
such Form 10-K.

                                    PART III

ITEM 10.  DIRECTORS AND EXECUTIVE OFFICERS OF THE REGISTRANT.

DIRECTORS

          The following sets forth information regarding the persons serving as
Directors of the Company:

          ROBERT L. BARBANELL, age 69, has been Director since February 1997. He
has been President of Robert L. Barbanell Associates, Inc., a financial
consultancy firm, since July 1994. Prior thereto, Mr. Barbanell served in
various capacities at Bankers Trust New York Corporation, where he was Managing
Director of the European Merchant Bank of Bankers Trust International PLC from
1991 to 1994; Managing Director of BT Securities Corporation from 1989 to 1991;
Managing Director of Bankers Trust Company from 1986 to 1989; Senior Vice
President of Bankers Trust Company from 1981 to 1986. Prior to his service with
Bankers Trust, Mr. Barbanell served in various executive capacities at Amcon
Group, Inc. and GI Export Corporation. Mr. Barbanell currently serves on the
Boards of Directors of Marine Drilling Companies, Inc., Kaye Group, Inc. and
Cantel Industries, Inc. Mr. Barbanell's term as a Director expires at the 2001
Annual Meeting of Stockholders.

          ROBERT D. FURST, JR., age 47, has been a Director of the Company since
its inception. Prior thereto he was a Director of Video Sentry Corporation
("Video Sentry"), a predecessor of the Company, from January 1993 until February
1997. He was Chairman of the Board of Video Sentry from July 1996 and Chief
Executive Officer from August 1996 until February 1997. Mr. Furst was one of the
original shareholders of Video Sentry. He is also the founder and owner of Furst
Capital Management, a firm specializing in trading government and equity
securities as well as commodity futures. Mr. Furst is a member of the Chicago
Board of Trade and has been a securities and commodities trader since 1980. Mr.
Furst currently serves on the Boards of Directors of NOW Technologies, Inc., a
privately-held manufacturer of chemical packaging and dispensing systems serving
the semi-conductor industry; Lucht, Inc., a privately-held manufacturer of high
volume photographic printers and other equipment; and Neighborhood Marketing
Corporation, a privately-held consumer promotion and database marketing company
utilizing proprietary patented technologies. Mr. Furst's term as a Director
expires at the 2000 Annual Meeting of Stockholders.

          PAUL D. MELLIN, age 36, has been a Director since August 1997, when he
was appointed to fill a vacancy on the Board of Directors. Mr. Mellin joined SG
Cowen, a subsidiary of Societe Generale, as the Managing Director of the Mergers
and Acquisitions Group and as the head of their Electronics Mergers and
Acquisitions practice in April, 2000. Prior to Mr. Mellin's joining SG Cowen, he
was a member of the mergers and acquisitions group at Deutsche Banc Alex. Brown
LLC and Smith Barney. Mr. Mellin's term as a Director expires at the 2002 Annual
Meeting of Stockholders.

          THOMAS A. NICOLETTE, age 49, has been a Senior Executive Officer since
October 1999 and a Director of the Company since January 1997. Prior thereto,
Mr. Nicolette served as the President and Chief Executive Officer since January
1997 and in various capacities at several predecessors of the Company, including
Knogo North America Inc., where he was President, Chief Executive Officer and a
Director from December 1994 to February 1997, and Knogo Corporation, where he
was a Director from 1987 until December 1994, Chief Executive Officer from May
1994 to December 1994 and President and Chief Operating Officer from 1990 to May
1994. Prior thereto he served in other positions as an officer at Knogo
Corporation. Mr. Nicolette serves on the Board of Directors of SenTech EAS
Corporation and is Vice Chairman of the Board of Trustees of WLIW, the Long
Island-based affiliate of the Public Broadcasting System. Mr. Nicolette's term
as a Director expires at the 2000 Annual Meeting of Stockholders.

          WILLIAM A. PERLMUTH, age 70, has been Chairman of the Board of
Directors of the Company since January 1997. Prior thereto, Mr. Perlmuth served
as a Director of several predecessors of the Company from 1979 to February 1997.
Mr. Perlmuth has been a partner in the law firm of Stroock & Stroock & Lavan LLP
in New York, New York for more than five years and is presently of counsel to
such firm. Such firm and Mr. Perlmuth have performed legal services for the
Company. The aggregate amount of fees paid by the Company to Stroock & Stroock &
Lavan LLP was less than 5% of the law firm's gross revenues for the last fiscal
year. The Company believes that the billing rates for the foregoing legal
services were no less favorable to the Company than could have been obtained
from unaffiliated parties for comparable services. Mr. Perlmuth's term as a
Director expires at the 2002 Annual Meeting of Stockholders.

EXECUTIVE OFFICERS

          The following sets forth information regarding the persons serving as
executive officers of the Company:


                NAME                   AGE               OFFICE
                ----                   ---               ------

Anthony H.N. Schnelling.............   52         Interim President and Chief
                                                  Executive Officer of the
                                                  Company since October 1999.
                                                  Mr. Schnelling is a principal
                                                  of Restoration Management
                                                  Company, LLC which he
                                                  co-founded in 1997. Since July
                                                  1996, he has been active in
                                                  providing consulting and
                                                  crisis management services to
                                                  private and public companies
                                                  and individuals. From October
                                                  of 1989 through June of 1996,
                                                  Mr. Schnelling practiced law
                                                  with Stroock & Stroock & Lavan
                                                  in New York City. From 1986
                                                  through 1989 Mr. Schnelling
                                                  attended Fordham University
                                                  School of Law and has been a
                                                  member of its Alumni Board of
                                                  Directors since 1989. From
                                                  1978 through 1986, Mr.
                                                  Schnelling was the President,
                                                  Chief Executive Officer,
                                                  principal shareholder and a
                                                  Director of Colora Printing
                                                  Inks, Inc. in the United
                                                  States, Colora Printing Inks,
                                                  Ltd in the United Kingdom and
                                                  Ets. Colora S.A. in France, a
                                                  group that manufactured and
                                                  distributed printers ink for
                                                  the packaging industry. From
                                                  1974 through 1978, Mr.
                                                  Schnelling served in various
                                                  capacities at Morgan Guaranty
                                                  Trust Company of New York and
                                                  was chiefly active in its
                                                  shipping group.

Thomas A. Nicolette..................  49         Mr. Nicolette has been a
                                                  senior executive officer since
                                                  October 1999 and Director of
                                                  Sentry since January 1997.
                                                  Prior to October 1999, Mr.
                                                  Nicolette served as President
                                                  and Chief Executive Office of
                                                  the Company from January 1997.
                                                  Mr. Nicolette also served in
                                                  various capacities at several
                                                  predecessors of Sentry,
                                                  including Knogo North America
                                                  Inc., where he was President,
                                                  Chief Executive Officer and a
                                                  Director from December 1994 to
                                                  February 1997, and Knogo
                                                  Corporation, where he was a
                                                  Director from 1987 until
                                                  December 1994, Chief Executive
                                                  Officer from May 1994 to
                                                  December 1994 and President
                                                  and Chief Operating Officer
                                                  from 1990 to May 1994. Prior
                                                  thereto he served in other
                                                  positions as an officer at
                                                  Knogo Corporation. Mr.
                                                  Nicolette serves on the Board
                                                  of Directors of SenTech EAS
                                                  Corporation and is Vice
                                                  Chairman of the Board of
                                                  Trustees of WLIW, the Long
                                                  Island-based affiliate of the
                                                  Public Broadcasting System.

Peter J. Mundy......................   43         Vice President-Finance and
                                                  Chief Financial Officer of
                                                  Sentry. Mr. Mundy also serves
                                                  as Secretary and Treasurer of
                                                  the Company. Mr. Mundy was
                                                  Vice President - Finance,
                                                  Chief Financial Officer,
                                                  Secretary and Treasurer of
                                                  Knogo North America Inc. from
                                                  December 1994. Prior thereto,
                                                  Mr. Mundy served as an officer
                                                  of Knogo Corporation where he
                                                  was Vice President - Corporate
                                                  Controller from May 1994 and,
                                                  prior to such time, Corporate
                                                  Controller and Controller
                                                  since 1982. Mr. Mundy is a
                                                  Certified Public Accountant.

John F. Whiteman....................    41        Mr. Whiteman became Senior
                                                  Vice President - Sales and
                                                  Marketing of Sentry in January
                                                  1998. Prior thereto he was
                                                  Senior Vice President - Sales
                                                  and Marketing of Knogo North
                                                  America Inc. since January
                                                  1997; Vice President Sales -
                                                  West of Knogo North America
                                                  Inc. and Knogo Corporation
                                                  from 1994 to 1996; and, prior
                                                  to such time, served in
                                                  various sales positions with
                                                  Knogo Corporation since 1986.


SECTION 16(A) BENEFICIAL OWNERSHIP REPORTING COMPLIANCE

          Section 16(a) of the Securities Exchange Act of 1934 (the "Exchange
Act") requires the Company's officers, Directors and persons who own more than
10% of a registered class of the Company's equity securities to file reports of
ownership and changes in ownership with the Securities and Exchange Commission
and the American Stock Exchange. Officers, Directors and greater than
ten-percent Stockholders are required by Securities and Exchange Commission
regulations to furnish the Company with copies of all such reports they file.

          Based solely on a review of the copies of such reports furnished to
the Company, or written representations that no Forms 5 were required, the
Company believes that during the fiscal year ended December 31, 1999, all
Section 16(a) filing requirements applicable to its officers, Directors and
greater than ten-percent beneficial owners were complied with.


<PAGE>


ITEM 11.  EXECUTIVE COMPENSATION.

SUMMARY COMPENSATION TABLE

          The following table summarizes the compensation for the Company's
fiscal year ended December 31, 1999 of the Company's Chief Executive Officer and
each of four other executive officers of the Company:
<TABLE>
<CAPTION>

                                                                                    LONG-TERM                 ALL OTHER
                                              ANNUAL COMPENSATION                   COMPENSATION              COMPENSATION (1)
                                              -------------------                   ------------              ----------------

                                                                                          SECURITIES
NAME AND                                                                                  UNDERLYING
PRINCIPAL POSITION                YEAR            SALARY             BONUS                OPTIONS (#)
------------------                ----            ------             -----                -----------

<S>                               <C>             <C>                <C>                   <C>                        <C>
Anthony H.N. Schnelling           1999            $   50,000(2)          -                   200,000                        -
Interim President and CEO

Thomas A. Nicolette,              1999                  206,941          -                    75,000                    $ 4,800
Senior Executive Officer          1998                  198,380          -                    50,000                      4,800
                                  1997                  194,167          -                   100,000                      4,390

Peter J. Mundy,                   1999                  124,165          -                    35,000                      3,725
Vice President - Finance,         1998                  119,028          -                    20,000                      3,571
Secretary and Treasurer           1997                  118,110          -                    40,000                      3,543

John F. Whiteman                  1999                  152,462          -                    50,000                      4,574
Sr. Vice President Sales and      1998                  145,476          -                    30,000                      4,364
Marketing                         1997                  149,120        $30,943                40,000                      3,586

Peter Y. Zhou,                    1999                  134,512          -                    20,000                      4,036
Vice President -                  1998                  128,947          -                    12,500                      3,868
Technology(3)                     1997                  128,833          -                    40,000                      3,865


--------------------
(1)  Amounts shown consist of the Company's matching contributions under the
     Retirement Savings 401(k) Plan.

(2)  Compensation to Mr. Schnelling was paid to Restoration Management, LLC, of
     which he is a principal.

(3)  Dr. Zhou resigned from the Company in January 2000.
</TABLE>

          As to various items of personal benefits, the Company has concluded
that the aggregate amount of such benefits with respect to each individual does
not exceed the lesser of $50,000 or 10% of the annual salary and bonus reported
in the table for such individual.


<PAGE>


OPTIONS GRANTED IN LAST FISCAL YEAR

          The following table sets forth certain information concerning options
granted during 1999 to each person named in the Summary Compensation Table:

<TABLE>
<CAPTION>

                          NUMBER OF
                         SECURITIES    % OF TOTAL                                      POTENTIAL REALIZABLE VALUE AT ASSUMED
                         UNDERLYING    GRANTED TO                                           ANNUAL RATE OF STOCK PRICE
                           OPTIONS    EMPLOYEES IN    EXERCISE      EXPIRATION          APPRECIATION FOR OPTION TERM(2)(3)
NAME                       GRANTED        1999       PRICE (1)         DATE                  5%                 10%
----                       -------        ----       ---------         ----                  --                 ---


<S>                        <C>            <C>          <C>            <C>                <C>                     <C>
Anthony H.N.               200,000        30.5%        $.188          See Note (1)       $23,650                 $59,934
Schnelling
Thomas A. Nicolette         75,000        11.4%         .62                1/11/09        29,249                 74,121
Peter J. Mundy             35,000         5.3%          .62                1/11/09        18,649                 34,590
John F. Whiteman           50,000         7.6%          .62                1/11/09        19,499                 49,414
Peter Y. Zhou(4)           20,000         3.0%          .62                1/11/09        7,800                  19,766


(1)  These options were granted with an excise price equal to the market value
     of the Common Stock on the date of the grant. Mr. Schnelling was granted
     non-qualified options which vest immediately and expire two years from the
     termination of his consulting agreement. All other options granted were
     incentive stock options which vest over a five year period at 20% per year
     and expire after 10 years.

(2)  Represents a gain that would be realized assuming the options were held
     until expiration and the stock price increased at compounded rates of 5%
     and 10% from the base price per share.

(3)  The dollar amounts under these columns use the 5% and 10% rates of
     appreciation required by the Securities and Exchange Commission. This
     presentation is not intended to forecast possible future appreciation of
     the Company's Common Stock.

(4)  Dr. Zhou resigned from the Company in January 2000.
</TABLE>


<PAGE>


AGGREGATED OPTION EXERCISES IN LAST FISCAL YEAR AND FISCAL YEAR END OPTION
VALUES

          The following table sets forth for each of the persons named in the
Summary Compensation Table the number of options exercised during 1999 and the
amount realized by each such officer. In addition, the table shows the number of
options that the named executive officer held as of December 31, 1999, both
exercisable (E) and unexercisable (U), and the value of such options as of that
date.

<TABLE>
<CAPTION>
                                                                        NUMBER OF UNEXERCISED       VALUE OF UNEXERCISED IN THE
                                                                        OPTIONS AT YEAR-END (#)     MONEY OPTIONS AT YEAR END ($)
                                SHARES
                                ACQUIRED ON          VALUE              EXERCISABLE/                EXERCISABLE/
NAME                            EXERCISE (#)         REALIZED ($)       UNEXERCISABLE               UNEXERCISABLE
----                            ------------         ------------       -------------               -------------

<S>                                     <C>                  <C>        <C>        <C>              <C>      <C>
Anthony H.N. Schnelling                  -                   -          E          200,000          E        -
                                                                        U                -          U        -
Thomas A. Nicolette                      -                   -          E          292,139          E        -
                                                                        U          130,000          U        -
Peter J. Mundy                           -                   -          E          112,614          E        -
                                                                        U           56,000          U        -
John F. Whiteman                         -                   -          E           64,716          E        -
                                                                        U           74,000          U        -
Peter Y. Zhou(1)                         -                   -          E          103,703          E        -
                                                                        U           39,500          U        -


---------------

(1)  Dr. Zhou resigned from the Company in January 2000.
</TABLE>

COMPENSATION OF DIRECTORS

          Directors who are also full-time employees of Sentry receive no
additional compensation for their services as Directors. Each non-employee
Director receives $12,000 annually for services on the Board and $1,000 per
Board meeting (other than telephonic meetings) attended. In addition, each
non-employee Director who is a member of any committee of the Board receives
$500 for attendance at any meeting of such committee which is held neither
immediately before nor immediately after a Sentry Board meeting; PROVIDED,
HOWEVER, that the chairman of the Audit Committee of the Board receives $1,000
for attendance at any such separately held meeting of the Audit Committee and
$500 for attendance at any meeting of such committee held either immediately
before or immediately after a Board meeting.

          In addition, each non-employee Director is eligible to participate in
the 1997 Stock Incentive Plan of Sentry. On February 12, 1999, each non-employee
Director also received a grant of options to purchase 3,000 shares of Common
Stock at an exercise price of $.625, vesting in equal portions over a five year
period, and on February 14, 2000, each non-employee Director also received a
grant of options to purchase 3,000 shares of Common Stock at an exercise price
of $.3125, vesting in equal portions over a five year period.

EMPLOYMENT AGREEMENTS AND COMPENSATION OF EXECUTIVE OFFICERS; CHANGE OF CONTROL
ARRANGEMENTS

          Anthony H.N. Schnelling is a principal of Restoration Management LLC,
or "Restoration." Restoration was retained by the Company in October 1999 in
order to assist in the Company's efforts to reduce operating expenditures, to
return the Company to profitability, and to further the Company's efforts to
find an acquisition partner or strategic investor. Mr. Schnelling was appointed
interim President and Chief Executive Officer in order to facilitate the
performance of Restoration's services to the Company.

          Compensation paid to Restoration was negotiated at arm's length. In
connection with the negotiation, Restoration, through Mr. Schnelling, requested
and was granted an option to purchase 200,000 shares of the Company's Common
Stock at an exercise price of $0.188 (which was the fair market value of the
Common Stock on the date of grant). In granting this option, the Board of
Directors of the Company took into account the nature of the task Restoration
was expected to perform, the cash fee being paid to Restoration, and the fact
that the option would have no value to Restoration unless the Company's stock
price increased.

          The employment agreement between the Company and Mr. Nicolette,
formerly the Chief Executive Officer and presently a senior executive office of
the Company, is for a term ending February 11, 2001. Mr. Nicolette's annual
compensation is presently $211,616 per year, after cost-of-living adjustments,
and he is also eligible for consideration to receive up to an additional 50% of
such amount, based upon certain performance-based criteria. He receives the use
of an automobile and life insurance in the amount of $1,000,000.

          The employment agreement of Mr. Mundy renews automatically on April 12
for one year renewals. After cost- of-living adjustments, his annual salary is
presently $126,970. The employment agreement of Mr. Whiteman is for a term
ending April 12, 2001 at an annual salary which with cost-of-living adjustments
is presently $156,906.

          The employment agreements of Messrs. Nicolette, Mundy and Whiteman
also provide that in the event of a change in control of the Company, the term
of each of their employment will be automatically extended for a period of two
years in the case of Mr. Nicolette's agreement and one year in the case of each
of the other agreements, following the date of such change in control. Following
such change in control, each of such persons will have the right to terminate
his employment for good reason, as defined, while continuing to receive the
salary and bonus otherwise payable thereunder for the remainder of the
employment term. Additionally, the employment agreements provide that in the
event of a change in control all options held by the employee, whether or not
then vested, would fully vest. If the change in control was not approved by a
majority of the Existing Directors (as defined in the Company's Certificate of
Incorporation), each such officer would be entitled to receive, for each option
for which the exercise price is less than the market price of the Common Stock,
cash in cancellation of such options in an amount equal to such difference.


<PAGE>



ITEM 12.  SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT.

          The following table sets forth the beneficial ownership of Sentry
Common Stock and Class A Preferred Stock at April 28, 2000, as to each (i)
beneficial owner of five percent or more of the Common Stock, (ii) Sentry
Director, (iii) executive officer of Sentry and (iv) all Directors and executive
officers as a group. On April 28, 2000, 9,750,760 shares of Common Stock and
5,333,334 shares of Preferred Stock were outstanding. The Class A Preferred
Stock is non-voting.


                                            SHARES OF            PERCENT
NAME AND ADDRESS OF BENEFICIAL OWNERS       COMMON STOCK         OF CLASS(1)
-------------------------------------       ------------         -----------
Walter & Edwin Schloss
Associates L.P.
350 Park Avenue
New York, NY  10022                         602,883                 6.2%

<TABLE>
<CAPTION>
                                                   SHARES OF      PERCENT          SHARES OF CLASS A      PERCENT
DIRECTORS AND EXECUTIVE OFFICERS                   COMMON STOCK   OF CLASS(1)      PREFERRED STOCK        OF CLASS(2)
--------------------------------                   ------------   -----------      ---------------        -----------

<S>                                                <C>      <C>        <C>            <C>                      <C>
Anthony H.N. Schnelling                            200,000  (3)        2.0%                   -                  -

Thomas A. Nicolette                                444,720  (4)        4.5%            346,852   (5)            6.3%

Peter J. Mundy                                     141,945  (6)        1.4%            104,616   (7)            1.9%

John F. Whiteman                                    78,941  (8)          *              49,269   (9)             *

Paul D. Mellin                                       7,800 (10)          *                   -                   -

Robert L. Barbanell                                 15,800 (11)          *              16,537                   *

William A. Perlmuth
c/o Stroock & Stroock & Lavan LLP
180 Maiden Lane
New York, NY  10038                                913,166 (12)        9.3%            988,716  (13)            18.5%

Robert D. Furst, Jr.
3900 Walden Road
Deephaven, MN  55391                               739,690 (14)        7.6%            115,510                  2.2%

All Sentry Directors and executive officers
as a group (8 persons)                           2,542,062 (15)        24.3%         1,621,500  (16)            28.7%

---------------------------
*    Less than one percent
(1)  Based on 9,750,760 shares of Common Stock outstanding as of April 28, 2000.
     Each figure showing the percentage of outstanding shares beneficially owned
     has been calculated by treating as outstanding and owned the shares of
     Common Stock which could be purchased by the indicated person within 60
     days upon exercise of stock options.
(2)  Based on 5,333,334 shares of Class A Preferred Stock outstanding as of
     April 28, 2000. Each figure showing the percentage of outstanding shares
     beneficially owned has been calculated by treating as outstanding and owned
     the shares of Class A Preferred Stock which could be purchased by the
     indicated person within 60 days upon exercise of stock options.
(3)  Includes 200,000 shares of Common Stock issuable upon the exercise of stock
     options exercisable within 60 days of the date hereof.
(4)  Excludes 41,590 shares of Common Stock held by a trust for the benefit of
     Mr. Nicolette's wife, as to which shares Mr. Nicolette disclaims beneficial
     ownership. Includes 74,862 shares of Common Stock held by Mr. Nicolette as
     co-trustee under trusts for the benefit of his minor children and as to
     which shares Mr. Nicolette disclaims beneficial ownership. Also includes
     292,139 shares of Common Stock issuable upon the exercise of stock options
     exercisable within 60 days from the date hereof.
(5)  Excludes 49,976 shares of Class A Preferred Stock held by a trust for the
     benefit of Mr. Nicolette's wife, as to which shares Mr. Nicolette disclaims
     beneficial ownership. Includes 82,536 shares of Common Stock held by Mr.
     Nicolette as co-trustee under trusts for the benefit of his minor children
     and as to which shares Mr. Nicolette disclaims beneficial ownership. Also
     includes 197,138 shares of Class A Preferred Stock issuable upon the
     exercise of stock options exercisable within 60 days from the date hereof.
(6)  Includes 112,614 shares of Common Stock issuable upon the exercise of stock
     options exercisable within 60 days from the date hereof.
(7)  Includes 73,614 shares of Class A Preferred Stock issuable upon the
     exercise of stock options exercisable within 60 days from the date hereof.
(8)  Includes 64,716 shares of Common Stock issuable upon the exercise of stock
     options exercisable within 60 days of the date hereof.
(9)  Includes 18,716 shares of Class A Preferred Stock issuable upon the
     exercise of stock options exercisable within 60 days of the date hereof.
(10) Includes 7,800 shares of Common Stock issuable upon the exercise of stock
     options exercisable within 60 days from the date hereof.
(11) Includes 10,800 shares of Common Stock issuable upon exercise of stock
     options exercisable within 60 days from the date hereof.
(12) Consists of (a) 750,729 shares of Common Stock held by Mr. Perlmuth as
     Executor of the Estate of Arthur J. Minasy, (b) 130,010 shares of Common
     Stock held by Mr. Perlmuth as trustee under trusts for the benefit of Mr.
     Minasy's adult children, and (c) 3,327 shares of Common Stock beneficially
     owned by Mr. Perlmuth. Also includes 29,100 shares of Common Stock issuable
     upon the exercise of stock options exercisable within 60 days from the date
     hereof. Under the policies of the law firm of which he is of counsel, Mr.
     Perlmuth will share any economic benefits of the options with the other
     members of such firm.
(13) Consists of (a) 827,678 shares of Class A Preferred Stock held by Mr.
     Perlmuth as Executor of the Estate of Arthur J. Minasy, (b) 139,071 shares
     of Class A Preferred Stock held by Mr. Perlmuth as trustee under trusts for
     the benefit of Mr. Minasy's adult children, and (c) 3,667 shares of Class A
     Preferred Stock beneficially owned by Mr. Perlmuth. Also includes 18,300
     shares of Class A Preferred Stock issuable upon the exercise of stock
     options exercisable within 60 days from the date hereof. Under the policies
     of the law firm of which he is of counsel, Mr. Perlmuth will share any
     economic benefits of the options with the other members of such firm.
(14) Includes 10,800 shares of Common Stock issuable upon the exercise of stock
     options exercisable within 60 days from the date hereof.
(15) Includes 727,969 shares of Common Stock issuable upon the exercise of stock
     options exercisable within 60 days from the date hereof.
(16) Includes 307,768 shares of Class A Preferred Stock issuable upon the
     exercise of stock options exercisable within 60 days from the date hereof.
</TABLE>


ITEM 13.  CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS.

     None.


<PAGE>


                                   SIGNATURES

          Pursuant to the requirements of Section 13 or 15(d) of the Securities
Exchange Act of 1934, the Company has duly caused this report to be signed on
its behalf by the undersigned, thereunto duly authorized.

                                       SENTRY TECHNOLOGY CORPORATION



                                       By:  /S/ PETER J. MUNDY
                                            ------------------
                                            Peter J. Mundy
                                            Vice President-Finance,
                                            Chief Financial Officer,
                                            Secretary and Treasurer

Dated:  April 28, 2000