Document:

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                                                                    EXHIBIT 10.1

                    AMENDMENT TO CREDIT AGREEMENT AND WAIVER

     THIS AMENDMENT TO CREDIT AGREEMENT AND WAIVER (this "Amendment"), dated
as of the 12th day of September, 2001, by and between STEEL CITY PRODUCTS, INC.
a Delaware (the "Borrower") and NATIONAL CITY BANK OF PENNSYLVANIA (the "Bank").

                                   BACKGROUND

     A. The Borrower and the Bank entered into a certain Credit Agreement dated
as of July 13, 2001 (as amended, supplemented, replaced or otherwise modified,
the "Agreement") pursuant to which the Bank has made a credit facility or
facilities available to the Borrower.

     B. The Borrower has requested the Bank to (i) waive a covenant default, and
(ii) revise various other provisions of the Agreement, and the Bank is willing
to do so upon the terms and conditions set forth in this Amendment.

     NOW THEREFORE, intending to be legally bound hereby, the parties hereto
amend the Agreement and agree as follows:

     Section 1. Capitalized Terms.

     Unless otherwise specified herein, capitalized terms used in this Amendment
(including the BACKGROUND above) without definition shall have the same meaning
as set forth in the Agreement as amended by this Amendment.

     Section 2. Amendments.

     The Agreement is hereby amended as follows:

     2.1 The last sentence of Section 2.01(a) of the Agreement is hereby amended
and restated in its entirety as follows:

         "The Bank's "Revolving Credit Committed Amount" shall be equal to Three
Million Seven Hundred Fifty Thousand and 00/100 Dollars ($3,750,000)."

     2.2 The reference to "25 basis points per annum" set forth in Section
2.02(a) of the Agreement is hereby delated and substituted in place thereof is a
reference to "35 basis points per annum."

     2.3 Section 2.04(a) of the Agreement is hereby amended and restated in its
entirety as follows:
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          "(a) Interest Rate. Subject to the terms and conditions of this
Agreement, the aggregate outstanding principal balance of the Revolving Credit
Loans shall bear interest for each day at a rate per annum equal to the Prime
Rate plus one and one-half percent (1-1/2%) (the "Interest Rate")."

     2.4  Section 2.09(a) of the Agreement is hereby amended and restated in
its entirety as follows:

          "(a) Borrowing Base. The "Borrowing Base" at any time shall mean the
sum, at the date of the most recent Borrowing Base Certificate required to be
furnished pursuant to Section 2.09(f) hereof, of:

               (i) seventy-five percent (75%) of the Net Value of Eligible
Receivables; provided, however, that at no time shall the Net Value of Eligible
Receivables due and owing from either of Giant Eagle Stores or Krogers Stores
exceed thirty percent (30%) of the total Net Value of Eligible Receivables of
the Borrower; and provided further that payments due to the Borrower from Ames
Department Stores shall not be Eligible Receivables; and provided further that
at no time shall the Net Value of Eligible Receivables due and owing from any
other obligor exceed twenty percent (20%) of the total Net Value of Eligible
Receivables of the Borrower; plus

               (ii) forty-five percent (45%) of the Net Value of Eligible
inventory; provided, however that the portion of the Borrowing Base
attributable to Eligible Inventory shall at not time exceed (A) prior to
December 1, 2001, fifty-eight percent (58%) of the Borrowing Base and (B) on
and after December 1, 2001, fifty percent (50%) of the Borrowing Base."

     2.5  Section 6.01 of the Agreement is hereby amended and restated in its
entirety as follows:

          "6.01 Financial Covenants. The EBITDA/Fixed Charges Ratio of the
Borrower determined (i) as of the Fiscal Quarter ending November 30, 2001, (ii)
as of the two (2) Fiscal Quarters ending February 28, 2002, (iii) as of the
three (3) Fiscal Quarters ending May 31, 2002, and (iv) as of each Fiscal
Quarter ending August 30, 2002 and thereafter, on a Rolling Four Quarter Basis,
each shall not be less than 1.0 to 1.0."

     2.6  Section 6.05 of the Agreement is hereby amended and restated in its
entirety as follows:

          "6.05 Loans and investments. The Borrower shall not purchase, own or
invest in any stock or other securities of any Person, or all or substantially
all of the assets of any Person, or any business or division of any Person
(whether in a single or series of related transactions) or make or permit to
exist any loans or advances to any Person (including equity investments in any
Subsidiary of the Borrower) existing on the Closing Date and set forth on
Schedule 6.05 to this Agreement; provided, however, notwithstanding the
foregoing, the Borrower may make payments or distributions (including loans,
advances and

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repayments of any kind hereunder but excluding payments for transaction expenses
related to entities other than the Borrower) to the Oakhurst Company, Inc.
provided such payments or distributions do not exceed $38,000 per month."

     2.7 The following defined terms set forth in Annex A to the Agreement are
hereby amended and restated in their entirety as follows:

         "Revolving Credit Maturity Date" shall mean April 1, 2002."

     Section 3. Waiver

     3.1 Waiver of Section 6.01 of the Agreement. The Borrower has informed the
Bank that it has violated the EBITDA/Fixed Charges Ratio set forth in Section
6.01 of the Agreement for the fiscal quarter ending August 31, 2001. The Bank
agrees to waive the violation of Section 6.01 and the Event of Default related
to that violation only for the fiscal quarter ending August 31, 2001.

     3.2 No Other Waivers. The waiver by the Bank herein does not either
implicitly or explicitly alter, waive or amend, except as provided herein, the
provisions of the Agreement.

     Section 4. Covenants, Representations and Warranties.

     4.1 The Borrower ratifies, confirms and reaffirms, without condition, all
the terms and conditions of the Agreement and the other Loan Documents and
agrees that it continues to be bound by the terms and conditions thereof as
amended by this Amendment; and, the Borrower further commits and affirms that it
has no defense, set off or counterclaim against the same. The Agreement and this
Amendment shall be construed as complementing each other and as augmenting and
not restricting the Bank's rights, and, except as specifically amended by this
Amendment, the Agreement shall remain in full force and effect in accordance
with its terms.

     4.2 The Borrower ratifies, confirms and reaffirms without condition, all
liens and security interests granted to the Bank pursuant to the Agreement and
the other Loan Documents, if any, and such liens and security interests shall
continue to secure the indebtedness and obligations of the Borrower to the Bank
under the Agreement, the Note and the other Loan Documents, including, but not
limited to, all loans made by the Bank to the Borrower as amended by this
Amendment.

     4.3 The Borrower represents and warrants to the Bank that:

         (a) This Amendment has been duly executed and delivered by the Borrower
and constitutes the legal, valid and binding obligations of the Borrower
enforceable in accordance with its terms;

         (b) The execution and delivery of this Amendment by the Borrower and
the performance and observance of the Borrower of the provisions hereof, do not
violate or

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conflict with the organizational agreements of the Borrower or any law
applicable to the Borrower or result in a breach of any provision of or
constitute a default under any other agreement, instrument or document binding
upon or enforceable against the Borrower:

         (c) The representations and warranties set forth within Article III of
the Agreement continue to be true and correct in all material respects as of the
date of the Amendment except those changes resulting from the passage of time;
and

         (d) No material adverse change has occurred in the business,
operations, consolidated financial condition or prospects of the Borrower since
the date of the most recent annual financial statement delivered to the Bank,
and no Event of Default or condition which, with the passage of time, the giving
of notice or both, could become an Event of Default has occurred and is
continuing.

     4.4 The Borrower shall execute or cause to be executed and deliver to the
Bank all other documents, instruments and agreements deemed necessary or
appropriate by the Bank in connection herewith.

     Section 6. Conditions Precedent.

     5.1 This Amendment shall be effective on the date hereof so long as each
of the following conditions has been satisfied:

         (a) No Event of Default shall have occurred and be continuing on the
date of this Amendment.

         (b) The representations and warranties set forth within Article III
of the Agreement shall continue to be true and correct in all material respects
as of the date of this Amendment except those changes resulting from the
passage of time only.

         (c) Contemporaneously with the execution hereof, the Borrower shall
deliver, or cause to be delivered, to the Bank:

             (i) A certificate of the corporate secretary or assistant
secretary of the Borrower, dated the date hereof, certifying (1) that the
Articles of Incorporation and By-Laws of the Borrower have not been changed
since they were delivered to the Bank, or if there have been any such changes,
attaching copies thereof as then in effect and (2) as to true copies of all
corporate action taken by the Borrower in authorizing the execution, delivery
and performance of this Amendment, and the transactions contemplated thereby;

             (ii) Payment to the Bank on the date hereof of a restructuring fee
in the amount of $7,500; and

             (iii) Such other documents, instruments and certificates required
by the Bank in connection with the transactions contemplated by this Amendment.

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     5.2  The Bank shall continue to have a first priority lien on and security
interest in the Collateral, if any, previously granted to the Bank.

     5.3  All legal details and proceedings in connection with the transactions
contemplated in this Amendment shall be satisfactory to counsel for the Bank,
and the Bank shall have received all such originals or copies of such documents
as the Bank may request.

     Section 6. Miscellaneous.

     6.1  This Amendment shall be construed in accordance with, and governed by
the laws of the Commonwealth of Pennsylvania without giving effect to the
provisions thereof regarding conflicts of law.

     6.2  Except as amended hereby, all of the terms and conditions of the
Agreement shall remain in full force and effect. This Amendment amends the
Agreement and is not a novation thereof.

     6.3  This Amendment shall inure to the benefit of, and shall be binding
upon, the respective successors and assigns of the Borrower and the Bank. The
Borrower may not assign any of its rights or obligations hereunder without the
prior written consent of the Bank.

     6.4  This Amendment may be executed in any number of counterparts and by
the different parties hereto on separate counterparts each of which, when so
executed, shall be deemed an original, but all such counterparts shall
constitute but one and the same instrument.

                [THIS PORTION OF PAGE INTENTIONALLY LEFT BLANK.]

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         IN WITNESS WHEREOF, the parties hereto have caused their duly
authorized officers to execute and deliver this Amendment to Credit Agreement
and Waiver the day and year first above written.

ATTEST:                                 STEEL CITY PRODUCTS, INC.

By: /s/ MICHAEL A. MALINAK              By: /s/ TERRANCE W. ALLAN
   ------------------------------          ---------------------------(SEAL)
Name:  Michael A. Malinak               Name:  Terrance W. Allan
Title: Controller                       Title: President, C.O.O.

               (SEAL)

                                        NATIONAL CITY BANK
                                        OF PENNSYLVANIA

                                        By: /s/ LORI B. SHURE
                                           ---------------------------
                                        Name:  Lori B. Shure
                                        Title: Vice President

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                                                                     EXHIBIT 4.7

                            CERTIFICATE OF AMENDMENT
                                       OF
              CERTIFICATE OF DESIGNATION, PREFERENCES AND RIGHTS OF
                    SERIES D $20 CONVERTIBLE PREFERRED STOCK
                                       OF
                        INTEGRATED SECURITY SYSTEMS, INC.

         Integrated Security Systems, Inc., a corporation organized and existing
under and by virtue of the General Corporation Law of the State of Delaware (the
"Corporation"), does hereby certify that:

         FIRST: The name of the Corporation is Integrated Security Systems, Inc.

         SECOND: The Board of Directors of the Corporation, by the unanimous
written consent of its members, adopted a resolution proposing and declaring
advisable that the liquidation amount set forth in the Certificate of
Designation, Preferences and Rights of Series D Convertible Preferred Stock of
the Corporation should be modified by adopting the following amendment to the
Certificate of Designation, Preferences and Rights of Series D Convertible
Preferred Stock of the Corporation:

                  Paragraph (1) of Section 7 shall be amended in its entirety as
         follows:

         "(1) Upon any liquidation (voluntary or otherwise), dissolution or
         winding up of the Corporation, no distribution shall be made to the
         holders of shares of stock ranking junior (either as to dividends or
         upon liquidation, dissolution or winding up) to the Series D $20
         Convertible Preferred Stock unless, prior thereto, the holders of
         shares of Series D $20 Convertible Preferred Stock shall have received
         the Liquidation Amount with respect to such shares. Until (a) all of
         the shares of Series F Cumulative Convertible Preferred Stock and
         Series G Cumulative Convertible Preferred Stock have been converted
         and/or redeemed, or (b) all of the holders of shares of Series F
         Cumulative Convertible Preferred Stock and Series G Cumulative
         Convertible Preferred Stock have received dividends and/or other
         distributions with respect to the Series F preferred stock and Series G
         preferred stock in an aggregate amount equal to the Liquidation
         Preference for such shares as set forth in this Restated Certificate of
         Incorporation. "Liquidation Amount" with respect to any share of Series
         D $20 Convertible Preferred Stock shall mean $0.01. After all of the
         shares of Series F Cumulative Convertible Preferred Stock and Series G
         Cumulative Convertible Preferred Stock have been converted or redeemed,
         or after all of the holders of shares of Series F Cumulative
         Convertible Preferred Stock and Series G Cumulative Convertible
         Preferred Stock have received dividends and/or other distributions with
         respect to the Series F preferred stock and Series G preferred stock in
         an aggregate amount equal to the Liquidation Preference for such shares
         as set forth in this Restated Certificate of Incorporation,
         "Liquidation Amount" with respect to any share of Series D $20
         Convertible Preferred Stock shall mean the sum of (i) $20 and (ii) the
         amount of any accrued and unpaid dividends with respect to such share
         on such date. Following the payment of the full amount of the
         Liquidation Amount, no additional distributions shall be made to the
         holders of shares of Series D $20 Convertible Preferred Stock."

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         THIRD: The resolution adopted by the Board of Directors has been duly
adopted by (a) the affirmative vote of the holders of a majority of the shares
of Common Stock outstanding and entitled to vote on the record date and Series D
preferred stock, voting together as a class, and (b) the affirmative vote of the
holders of the Series D preferred stock, voting separately as a class, in
accordance with the provisions of the General Corporation Law of the State of
Delaware.

             [The remainder of this page has been intentionally left blank;
signature page to follow.]

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         IN WITNESS WHEREOF, Integrated Security Systems, Inc. has caused this
certificate to be signed by its Chief Executive Officer as of May 10, 2001.

                                       INTEGRATED SECURITY SYSTEMS, INC.

                                       By: /s/ C.A. RUNDELL, JR.
                                           ------------------------------------
                                                C.A. Rundell, Jr.
                                                Chief Executive Officer

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