SECURITIES AND EXCHANGE COMMISSION
                              WASHINGTON, DC 20549
                                  ------------

                                 SCHEDULE 13D/A
                                 (Rule 13d-101)

                   UNDER THE SECURITIES EXCHANGE ACT OF 1934
                               (Amendment No. 2)


                      Universal Security Instruments, Inc.
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                                (Name of Issuer)

                                  Common Stock
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                         (Title of Class of Securities)

                                  913821 30 2
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                                 (CUSIP Number)

    Hillel Tendler, Esquire, Neuberger, Quinn, Gielen, Rubin & Gibber, P.A.
    One South Street, 27th Floor, Baltimore, Maryland 21202, (410) 332-8552
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                 (Name, Address and Telephone Number of Person
               Authorized to Receive Notices and Communications)

                                  May 26, 2004
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            (Date of Event Which Requires Filing of This Statement)

     If the filing  person has  previously  filed a statement on Schedule 13G to
report the acquisition  which is the subject of this Schedule 13D, and is filing
this  schedule  because of Rule  13d-1  (e),  13d-1(f)  or  13d-1(g),  check the
following box: _____

     Note.  Schedules  filed in paper format shall include a signed original and
five copies of the schedule, including all exhibits. See Rule 13d-7(b) for other
parties to whom copies are to be sent.



                         (Continued on following pages)


                              (Page 1 of 5 Pages)




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CUSIP No. 913821 30 2                          13D   Page 2 of 5 Pages
          ----------------------------------              -    -
--------------------------------------------         ---------------------------

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1        NAME OF REPORTING PERSONS
         S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS

         Stephen C. Knepper             215-42-1363
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2        CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                   _
                                                                        (a) |_|
                                                                             _
                                                                        (b) |_|

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3        SEC USE ONLY

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4        SOURCE OF FUNDS*

         PF
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5        CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDING IS
         REQUIRED PURSUANT TO ITEM 2(d) or 2(e)                            _
                                                                          |_|
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6        CITIZENSHIP OR PLACE OF ORGANIZATION

         U.S.A.
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                     7     SOLE VOTING POWER
   NUMBER OF               174,398
    SHARES
 BENEFICIALLY        -----------------------------------------------------------
 OWNED BY EACH       8     SHARED VOTING POWER
   REPORTING               174,398
  PERSON WITH
                     -----------------------------------------------------------
                     9     SOLE DISPOSITIVE POWER
                           174,398
                     -----------------------------------------------------------
                     10    SHARED DISPOSITIVE POWER
                           174,398
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11       AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
         174,398
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12       CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
         CERTAIN SHARES*                                                    _
                                                                           |_|
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13       PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
         10.74%
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14       TYPE OF REPORTING PERSON*
         IN
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                                  SCHEDULE 13D


Item 1. Security and Issuer.

     This statement  relates to shares of common stock, par value $.01 per share
(the "Shares"),  of Universal  Security  Instruments,  Inc. (the "Issuer"),  7-A
Gwynns Mill Court,  Owings Mills,  Maryland 21117.  All share numbers and prices
per share in this  statement  have been  adjusted to reflect the Issuer's  stock
dividend on April 5, 2004.

Item 2. Identity and Background.

     (a) The name of the Reporting  Person is Stephen C. Knepper (the "Reporting
Person").

     (b) The  Reporting  Person's  business  address is 7-A Gwynns  Mill  Court,
Owings Mills, Maryland 21117.

     (c) The  Reporting  Person is a director  and  Chairman of the Board of the
Issuer.

     (d) No.

     (e) No.

     (f) The Reporting Person is a citizen of the United States of America.

Item 3. Source and Amount of Funds or Other Consideration.

     The Reporting  Person  acquired the Shares  covered by this  statement with
personal  funds from time to time since the founding of the Issuer in 1969.  See
Item 6, below.

Item 4. Purpose of Transaction.

     The Reporting Person is a founder of the Issuer and has acquired the Shares
covered by this statement  from time to time to increase his equity  position in
the Issuer.

     The Reporting  Person has no current plans or proposals  which relate to or
would result in any of the following:

     (a)  The acquisition by any person of additional  securities of the Issuer,
          or the disposition of securities of the Issuer;

     (b)  An extraordinary  corporate transaction involving the Issuer or any of
          its subsidiaries;

     (c)  A sale or transfer of a material amount of assets of the Issuer or any
          of its subsidiaries;



                                       3


     (d)  Any change in the present  board of  directors  or  management  of the
          Issuer,  including any plans or proposals to change the number or term
          of  directors  or to fill  any  existing  vacancies  on the  board  of
          directors;

     (e)  Any material change in the present  capitalization  or dividend policy
          of the Issuer;

     (f)  Any  other  material  change in the  Issuer's  business  or  corporate
          structure;

     (g)  Changes in the Issuer's charter,  bylaws or instruments  corresponding
          thereto or other actions which may impede the  acquisition  of control
          of the Issuer by any person  (other than as a result of the  Reporting
          Person's stock ownership);

     (h)  Causing a class of  securities  of the  Issuer to be  delisted  from a
          national securities exchange or to cease to be authorized to be quoted
          in  an  inter-dealer   quotation  system  of  a  registered   national
          securities association;

     (i)  A class of equity  securities  of the  issuer  becoming  eligible  for
          termination  of  registration  pursuant  to  Section  12(g)(4)  of the
          Securities Exchange Act of 1934; or

     (j)  Any action similar to any of those enumerated above.

     Notwithstanding  the foregoing,  the Reporting Person may from time to time
acquire  beneficial  ownership  of  additional  Shares or  dispose of any Shares
beneficially  owned by him,  including  pursuant to any stock  option or similar
plan of the Issuer in which the Reporting Person is eligible to participate.  In
addition,  as a member of the Board of  Directors of the Issuer,  the  Reporting
Person will  participate  from time to time,  in the  consideration  of possible
actions or transactions  involving the Issuer, some of which may, in whole or in
part, relate to or result in one or more of the actions enumerated above.

Item 5. Interest in Securities of the Issuer.

     (a) The  Reporting  Person  is the  beneficial  owner  of  174,398  Shares,
representing  10.74%  of the  class of  securities  covered  by this  statement,
including (i) 2,893 Shares owned by a trust of which the Reporting Person is the
sole trustee, and (ii) 46,666 Shares which he has a right to acquire pursuant to
outstanding options exercisable within 60 days from the date hereof.

     (b) The Reporting Person has sole voting and dispositive power with respect
to all Shares he beneficially owns.



                                       4


     (c) On May 26, 2004, the Reporting  Person  exercised an option to purchase
23,333 Shares at an exercise price of $1.76 per Share originally  granted to the
Reporting Person on February 7, 2002.

     (d) Not applicable.

     (e) Not applicable.

Item 6. Contracts, Arrangements, Understandings or Relationships With Respect to
        Securities of the Issuer

     On June 28,  2002,  the Issuer  granted  the  Reporting  Person  options to
purchase  20,000 Shares at an exercise price of $2.81 per Share,  and options to
purchase  26,666 Shares at an exercise  price of $3.38 per Share.  These options
are currently exercisable.

Item 7. Material to be Filed as Exhibits.

     Not applicable.

Signature.

     After  reasonable  inquiry and to the best of my  knowledge  and belief,  I
certify that the information  set forth in this statement is true,  complete and
correct.

DATE:  June 2, 2004




                                               /s/ Stephen C. Knepper
                                            ------------------------------------
                                            Stephen C. Knepper










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