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


                                  SCHEDULE 13D/A



                    Under the Securities Exchange Act of 1934

                                 Amendment No. 7

                        Integrated Security Systems, Inc.
 ------------------------------------------------------------------------------
                                (Name of Issuer)

                                  Common Stock
 ------------------------------------------------------------------------------
                         (Title of Class of Securities)

                                    45812J101
 ------------------------------------------------------------------------------
                                 (CUSIP Number)

                                Russell Cleveland
                         Renaissance Capital Group, Inc.
                  8080 N. Central Expressway, Suite 210, LB-59
                            Dallas, Texas 75206-1857
                                 (214) 891-8294
 ------------------------------------------------------------------------------
                 (Name, Address, and Telephone Number of Person
                Authorized to Receive Notices and Communications)

                                 March 18, 2002
 ------------------------------------------------------------------------------
             (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 [ ].


                         (Continued on following pages)







CUSIP No. 45812J101                    13D
------------------------------------------------------------------------------
1.      NAME OF REPORTING PERSON                   I.R.S. IDENTIFICATION NUMBER
        Renaissance Capital Growth & Income Fund III, Inc.           75-2533518
------------------------------------------------------------------------------
2.      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
         (a)      [ ]
         (b)      [x]
------------------------------------------------------------------------------
3.      SEC USE ONLY
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4.      SOURCE OF FUNDS
        WC
------------------------------------------------------------------------------
5.      CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
        TO ITEM 2(d) OR 2(e)[  ]
------------------------------------------------------------------------------
6.      CITIZENSHIP OR PLACE OF ORGANIZATION
        Texas
------------------------------------------------------------------------------
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH:
------------------------------------------------------------------------------
        7.      SOLE VOTING POWER
                23,739,411
------------------------------------------------------------------------------
        8.      SHARED VOTING POWER
                None
      ------------------------------------------------------------------------
        9.      SOLE DISPOSITIVE POWER
                23,739,411
      ------------------------------------------------------------------------
       10.      SHARED DISPOSITIVE POWER
                None
------------------------------------------------------------------------------
11.     AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
                23,739,411
------------------------------------------------------------------------------
12.     CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN
        SHARES            [  ]
------------------------------------------------------------------------------
13.     PERCENT OF CLASS REPRESENTED BY AMOUNT IN  ROW (11)
                68.92%
------------------------------------------------------------------------------
14.     TYPE OF REPORTING PERSON
                IV






CUSIP No. 45812J101                       13D
------------------------------------------------------------------------------
1.      NAME OF REPORTING PERSON                   I.R.S. IDENTIFICATION NUMBER
        Renaissance US Growth & Income Trust PLC                 None - Foreign
 ------------------------------------------------------------------------------
2.      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
        (a)      [ ]
        (b)      [x]
------------------------------------------------------------------------------
3.      SEC USE ONLY
------------------------------------------------------------------------------
4.      SOURCE OF FUNDS
        WC
------------------------------------------------------------------------------
5.      CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
        TO ITEM 2(d) OR 2(e)  [  ]
------------------------------------------------------------------------------
6.      CITIZENSHIP OR PLACE OF ORGANIZATION
        England
------------------------------------------------------------------------------
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH:
------------------------------------------------------------------------------
        7.       SOLE VOTING POWER
                 22,903,099
        -----------------------------------------------------------------------
        8.       SHARED VOTING POWER
                 None
        -----------------------------------------------------------------------
        9.       SOLE DISPOSITIVE POWER
                 22,903,099
        -----------------------------------------------------------------------
        10.      SHARED DISPOSITIVE POWER
                 None
------------------------------------------------------------------------------
11.     AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
                 22,903,099
------------------------------------------------------------------------------
12.     CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN
        SHARES    [  ]
------------------------------------------------------------------------------
13.     PERCENT OF CLASS REPRESENTED BY AMOUNT IN  ROW (11)
                 68.15%
------------------------------------------------------------------------------
14.     TYPE OF REPORTING PERSON
                 IV






Item 1. Security and Issuer.

     This statement  relates to the Common Stock ("Common Shares") of Integrated
Security Systems,  Inc. (the "Company").  The principal executive offices of the
Company are located at 8200 Springwood Drive, Irving, Texas 75063.

Item 2. Identity and Background.

     (a) This  Statement is filed by  Renaissance  Capital  Growth & Income Fund
III, Inc.  ("Renaissance  III"),  and  Renaissance  US Growth & Income Trust PLC
("Renaissance  PLC");  Renaissance III and Renaissance  PLC,  collectively  (the
"Reporting Persons").

     Certain information  concerning the directors and executive officers of the
Reporting  Persons is set forth on Attachment 1 attached hereto and incorporated
herein by reference.

     (b) Renaissance III is a business  development  company regulated under the
Investment Company Act of 1940, as amended,  and organized under the laws of the
State of Texas,  with its  principal  business and  principal  office at 8080 N.
Central Expressway, Suite 210, LB-59, Dallas, Texas 75206-1857.

     Renaissance PLC is an investment  trust organized under the laws of England
and Wales.  Its address in the United States is c/o  Renaissance  Capital Group,
Inc., Investment Manager, 8080 N. Central Expressway,  Suite 210, LB-59, Dallas,
Texas 75206-1857.

     The  business  addresses of the  directors  and  executive  officers of the
Reporting  Persons  are  set  forth  on  Attachment  1  to  this  Statement  and
incorporated herein by reference.

     (c)  Renaissance  III and  Renaissance  PLC are engaged in the  business of
investing principally in emerging or undervalued U.S. public companies.

     (d) Neither any of the Reporting Persons nor, to the best knowledge of such
persons, any person named in Attachment 1 to this Statement,  has been convicted
in a criminal proceeding in the past five years (excluding traffic violations or
similar misdemeanors).

     (e) Neither any of the Reporting Persons nor, to the best knowledge of such
persons, any person named in Attachment 1 to this Statement, was during the last
five years a party to a civil proceeding of a judicial or administrative body of
competent  jurisdiction  as a result of which such person was or is subject to a
judgment,  decree, or final order enjoining future violations of, or prohibiting
or mandating  activities subject to, federal or state securities laws or finding
any violation with respect to such laws.

     (f) All persons named on Attachment 1 to this Statement are citizens of the
United  States  or the  United  Kingdom,  unless  otherwise  indicated  on  such
Attachment.

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

     The total  amount of funds  required  by  Renaissance  III to  acquire  the
securities  reported in Item 5(a) was  $4,842,352.  The source of such funds was
capital of Renaissance III.

     The total  amount of funds  required  by  Renaissance  PLC to  acquire  the
securities  reported in Item 5(a) was  $4,676,226.  The source of such funds was
capital of Renaissance PLC.



Item 4. Purpose of Transaction.

     The  Reporting  Persons each  acquired  beneficial  ownership of the Common
Stock  reported  in Item  5(a)  both in the  ordinary  course  of  business  for
investment  purposes and upon exchange of  indebtedness  in connection  with the
financial  restructuring  of the Company.  The President and CEO of  Renaissance
Capital  Group,  Inc.,  the  investment  advisor  to  Renaissance  III  and  the
investment manager of Renaissance PLC, Russell Cleveland,  has been appointed to
the board of directors of the Company.

     The Reporting  Persons may  participate in discussions  with  management or
third parties in which the Reporting  Person may suggest or take a position with
respect to potential changes in the operations, management, or capital structure
of such companies as a means of enhancing shareholder value. Such suggestions or
positions may relate to one or more of the transactions specified in clauses (a)
through (j) of Item 4 of the Schedule 13D form,  including,  without limitation,
such  matters as  disposing  of one or more  businesses,  selling  the  Company,
merging with another Company or acquiring another company or business,  changing
operating  or marketing  strategies,  changes in  management  or  marketing,  or
restructuring the Company's capitalization.

     Each Reporting Person continues to assess the Company's business, financial
condition, results of operations and prospects, general economic conditions, the
securities  markets  in  general  and  those  for the  Company's  securities  in
particular,  other developments and other investment  opportunities,  as well as
the Reporting Person's investment objectives. Depending on such assessments, one
or both of the  Reporting  Persons  may  acquire  additional  securities  or may
determine  to sell  or  otherwise  dispose  of  some  or all of its  holding  of
securities.

     Other than as described  above,  neither of the  Reporting  Persons has any
present plans or proposals  which relate to or would result in any  transaction,
change,  or event specified in clauses (a) through (j) of Item 4 of the Schedule
13D.

Item 5. Interest in Securities of the Issuer.

     (a)  Renaissance  III  beneficially  owns  23,739,411  Common  Shares,  and
Renaissance  PLC  beneficially  owns  22,903,099  Common  Shares.  The Reporting
Persons  beneficially own 46,642,510  Common Shares.  Based upon information the
11,143,071  shares of the Company's stock outstanding as of January 31, 2002, as
filed with the Securities  and Exchange  Commission in the Company's most recent
Form 10-Q SB for the quarter ended December 31, 2001, and using SEC  computation
rules, the Common Shares beneficially owned by Renaissance III, Renaissance PLC,
and  together represent  approximately 68.92%, 68.15%, and 80.72%, respectively,
of the outstanding Common Stock of the Company.  Renaissance III and Renaissance
PLC disclaim that they are members of a group for purposes of Regulation 13D.

     The Common Shares  beneficially  owned by Renaissance  III are comprised of
393,259  shares of Common  Stock;  44,653  shares of Common  Stock  received  as
payment in kind for interest and/or dividends;  2,064,299 shares of Common Stock
issuable upon the exercise of warrants;  187,500 shares of Common Stock issuable
upon the  conversion  of 7,500  shares of Series D  Preferred  Stock;  2,714,945
shares of Common Stock  issuable  upon  conversion  of 21,720 shares of Series F
Convertible  Preferred Stock ("Series F Preferred Stock"); and 18,334,755 shares
of  Common  Stock  issuable  upon  conversion  of  146,678  shares  of  Series G
Convertible Preferred Stock ("Series G Preferred Stock"). The board of directors
of Renaissance III exercises  voting and investment  control over the securities
of the Company owned by it.



     Renaissance PLC is deemed the beneficial  owner of Common Shares  comprised
of 393,259  shares of Common Stock;  44,653  shares of Common Stock  received as
payment in kind for interest and/or dividends;  2,058,617 shares of Common Stock
issuable upon the exercise of warrants;  187,500 shares of Common Stock issuable
upon the  conversion  of 7,500  shares of Series D  Preferred  Stock;  2,714,945
shares of Common Stock  issuable  upon  conversion  of 21,720 shares of Series F
Preferred Stock; and 17,504,125  shares of Common Stock issuable upon conversion
of  140,033  shares of Series G  Preferred  Stock.  The  board of  directors  of
Renaissance PLC exercises  voting and investment  control over the securities of
the Company owned by it.

     (b) Number of shares as to which Renaissance III has:
         (i)    Sole power to vote or to direct the vote
                23,739,411
         (ii)   Shared power to vote or to direct the vote
                None
         (iii)  Sole power to dispose or to direct the disposition of
                23,739,411
         (iv)   Shared power to dispose or to direct the disposition of
                None

         Number of shares as to which Renaissance PLC has:
         (i)    Sole power to vote or to direct the vote
                22,903,099
         (ii)   Shared power to vote or to direct the vote
                None
         (iii)  Sole power to dispose or to direct the disposition of
                22,903,099
         (iv)   Shared power to dispose or to direct the disposition of
                None

     (c) No transaction in the Common Shares was effected by a Reporting  Person
during the past 60 days,  except as  follows:  (1) the  purchase  on January 14,
2002, of a $50,000  non-convertible,  8%, 120 day promissory  note and five-year
warrants to  purchase  250,000  shares of Common  Stock at $0.20 a share by each
Renaissance  III and  Renaissance  PLC; (2) the receipt on February 1, 2002,  by
each  Renaissance  III and  Renaissance PLC of 10, 634 shares of Common Stock as
payment in kind of a  $3,402.74  dividend  on the  Company's  Series D Preferred
stock;  (3) the  receipt on  February  20,  2002,  by each  Renaissance  III and
Renaissance PLC of a total of 8,775 shares of Common Stock as payment in kind of
a total of  $2,882.19 in interest due on  promissory  notes;  (4) the receipt on
March 5, 2002, by each  Renaissance  III and  Renaissance PLC of 5,869 shares of
common  Stock as payment in kind of  $1,578.08  in  interest  due on  promissory
notes;  and (5) the  receipt  on March 18,  2002,  by each  Renaissance  III and
Renaissance  PLC of 5,912 shares of Common Stock as payment in kind of $1,534.25
in interest due on promissory notes.

     (d) No person other than the Reporting  Persons has the right to receive or
the power to direct the receipt of dividends from, or the proceeds from the sale
of, the Common Shares beneficially owned by the Reporting Persons.

     (e) Not applicable.

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

        Not Applicable.

Item 7. Material to be Filed as Exhibits.

     Exhibit 1   Joint Filing Agreement Pursuant to Rule 13d-1(k)

                            [Signature page follows]




                                   SIGNATURES

     After reasonable inquire and to the best of their individual  knowledge and
belief,  the  signatories  below certify that the  information set forth in this
statement is true, complete, and correct as of this 10th day of October, 2001.

     The persons  whose  signatures  appear  below agree that this  statement on
Schedule 13D is filed on behalf of each of them.

                           RENAISSANCE CAPITAL GROWTH & INCOME FUND III, INC.



                           By:      /S/__________________________
                         Name:      Russell Cleveland
                        Title:      President and Chief Executive Officer


                           RENAISSANCE US GROWTH & INCOME TRUST PLC




                           By:      /S/____________________________
                         Name:      Russell Cleveland
                        Title:      Director






                                  ATTACHMENT 1

     The name, business address,  and principal  occupation of the directors and
executive officers of Renaissance III are as follows:

DIRECTORS
                                                                     Principal
Name                      Business Address                           Occupation

Edward O. Boshell, Jr.    c/o Renaissance Capital Group, Inc.        Director
                          8080 North Central Expressway
                          Suite 210, LB-59
                          Dallas, TX 75206-1857
Russell Cleveland         c/o Renaissance Capital Group, Inc.        Director
                          8080 North Central Expressway
                          Suite 210, LB-59
                          Dallas, TX 75206-1857
Peter Collins             c/o Renaissance Capital Group, Inc.        Director
                          8080 North Central Expressway
                          Suite 210, LB-59
                          Dallas, TX 75206-1857
Ernest C. Hill            c/o Renaissance Capital Group, Inc.        Director
                          8080 North Central Expressway
                          Suite 210, LB-59
                          Dallas, TX 75206-1857
OFFICERS

Russell Cleveland         c/o Renaissance Capital Group, Inc.    President and
                          8080 North Central Expressway          Chief Executive
                          Suite 210, LB-59                       Officer
                          Dallas, TX 75206-1857
John A. Schmit            c/o Renaissance Capital Group, Inc.    Vice President
                          8080 North Central Expressway
                          Suite 210, LB-59
                          Dallas, TX 75206-1857
Robert C. Pearson         c/o Renaissance Capital Group, Inc.    Vice President
                          8080 North Central Expressway
                          Suite 210, LB-59
                          Dallas, TX 75206-1857
Barbara A. Butschek       c/o Renaissance Capital Group, Inc.    Secretary and
                          8080 North Central Expressway          Treasurer
                          Suite 210, LB-59
                          Dallas, TX 75206-1857







     The name, business address,  and principal  occupation of the directors and
executive officers of Renaissance PLC are as follows:

DIRECTORS
                                                                     Principal
Name                            Business Address                     Occupation

Michael B. Cannan               c/o Sinclair Henderson Limited       Director
                                23 Cathedral Yard
                                Exeter EX11HB
Russell Cleveland               c/o Sinclair Henderson Limited       Director
                                23 Cathedral Yard
                                Exeter EX11HB
Ernest J. Fenton                c/o Sinclair Henderson Limited       Director
                                23 Cathedral Yard
                                Exeter EX11HB
Lord Mark Fitzalan Howard OBE   c/o Sinclair Henderson Limited       Director
                                23 Cathedral Yard
                                Exeter EX11HB
C. A. Rundell, Jr.              c/o Sinclair Henderson Limited       Director
                                23 Cathedral Yard
                                Exeter EX11HB
William W. Vanderfelt           c/o Sinclair Henderson Limited       Director
                                23 Cathedral Yard
                                Exeter EX11HB

OFFICERS

None








                                                                       EXHIBIT 1

                JOINT FILING AGREEMENT PURSUANT TO RULE 13d-1(k)

     The  undersigned  acknowledge  and agree that the  foregoing  statement  on
Schedule 13D is filed on behalf of each of the  undersigned and that all of each
of the  undersigned  without the  necessity  of filing  additional  joint filing
agreements.  The undersigned  acknowledge that each shall be responsible for the
timely filing of such  amendments,  and for the completeness and accuracy of the
information  concerning it contained  therein,  but shall not be responsible for
the completeness and accuracy of the information  concerning the others,  except
to the  extent  it knows or has  reason to  believe  that  such  information  is
inaccurate.  This  Joint  Filing  Agreement  may be  executed  in any  number of
counterparts  and all of such  counterparts  taken together shall constitute one
and the same instrument.

                              RENAISSANCE CAPITAL GROWTH & INCOME FUND III, INC.




                               By:     /S/___________________________
                             Name:     Russell Cleveland
                            Title:     President and Chief Executive Officer


                               RENAISSANCE US GROWTH & INCOME TRUST PLC




                               By:     /S/____________________________
                             Name:     Russell Cleveland
                            Title:     Director