EXHIBIT 26.1


                       FIRST AMENDMENT TO CREDIT AGREEMENT
                       -----------------------------------
                                   AND WAIVER
                                   ----------

FIRST AMENDMENT TO AMENDED AND RESTATED CREDIT AGREEMENT and WAIVER dated as of
August 18, 2008 (the "First Amendment") by and among NAPCO SECURITY SYSTEMS,
INC., a Delaware corporation (the "Borrower"), CAPITAL ONE, N.A. a national
banking association, HSBC Bank USA, National Association, a national banking
association, collectively, the "Lenders") and HSBC BANK, USA, National
Association, a national banking association, as administrative agent and
collateral agent for the Lenders hereunder (in such capacities, the
"Administrative Agent" and the "Collateral Agent", respectively and each an
"Agent")".

                                    RECITALS
                                    --------

     The Borrower,  the Lenders,  and the  Administrative  Agent entered into an
Amended and Restated Credit  Agreement dated as of August 18, 2008, (the "Credit
Agreement"),  pursuant  to which  certain  financial  accommodations  were  made
available to the Borrower.

     The Borrower has requested  that the Lenders and the  Administrative  Agent
modify certain of the terms set forth in the Credit  Agreement and further waive
another term of the Credit  Agreement  for a certain  period and the Lenders and
the  Administrative  Agent are  willing to modify such terms and waive such term
but only upon and subject to the following terms and conditions.

     NOW THEREFORE,  in  consideration  of the premises and mutual covenants and
promises exchanged herein, the parties hereto mutually agree as follows:

     Section  1.  Definitions.   Except  as  otherwise  defined  in  this  First
Amendment,  terms  defined in the Credit  Agreement  are used  herein as defined
therein.

     Section  2.  Amendment.  Subject  to the  satisfaction  of  the  conditions
precedent specified in Section 4 below:

     (A) Section 1.1 of the Credit  Agreement is hereby  amended by deleting the
definition of  "Revolving  Credit  Commitment"  and  substituting  the following
therefor:

     "Revolving Credit Commitment":  as to any Revolving Lender at any time, its
     obligation to make Revolving Credit Loans,  issue or participate in Letters
     of Credit issued for the account of the Borrower and/or make or participate
     in Swing Line Loans to the Borrower in an aggregate amount not to exceed at
     any time  outstanding  the amount set forth  opposite such Lender's name in
     Schedule I hereto under the heading "Revolving Credit  Commitment," as such
     amount may be reduced from time to time pursuant to subsection  2.4 and the
     other applicable provisions hereof.

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     (B) Schedule I referenced in the definition of Revolving Credit  Commitment
is hereby amended by deleting same and substituting Schedule I-1 attached hereto
for same.

     (C) Section 6.3 of the Credit  Agreement is hereby amended by deleting same
and substituting the following therefor:

          "6.3 Post Closing  Obligations.  By January 15, 2009 (or September 18,
     2008 in the case of subsection (h) hereof) the Borrower will deliver to the
     Administrative   Agent  the  following  in  form  and  content   reasonably
     satisfactory to the  Administrative  Agent and the Required Lenders in each
     case, at the Borrower's sole cost and expense:

          (a)  An environment  report (Phase II) on the Borrower's real property
               located  at  333  Bayview  Avenue,   Amityville,  New  York  (the
               "Mortgaged Property');

          (b)  A mortgage and security agreement on the  Administrative  Agent's
               standard  form or other  form  acceptable  to the  Administrative
               Agent and its counsel, (the "Mortgage")  encumbering the land and
               improvements upon the Mortgaged  Property securing the $5,000,000
               in  principal  amount of the  obligations  under  this  Agreement
               together with  Hazardous  Material  Guaranty and  Indemnification
               Agreement on the standard form of the Administrative  Agent or on
               a form  acceptable  to the  Administrative  Agent and its counsel
               from the Borrower and its Domestic  Subsidiaries  with respect to
               the real property encumbered by such Mortgage;

          (c)  An updated  survey of the  Mortgage  Property  guaranteed  to the
               Administrative    Agent    together    with    certificates    of
               occupancy/completion  for all  improvements  requiring  same  and
               satisfactory violation, flood, lien and judgment searches;

                                      - 2 -


          (d)  Title   insurance    (including   such    endorsements   as   the
               Administrative  Agent shall  require)  insuring the Mortgage as a
               first mortgage lien upon the Mortgaged  Property  subject only to
               those exceptions  permitted by the  Administrative  Agent and its
               counsel;

          (e)  Paid  certificates  of  insurance  evidencing  hazard,   business
               interruption,   explosion,   flood  (if  necessary)  and  general
               liability  coverage in such amounts and on such forms as shall be
               satisfactory to the Administrative Agent and its counsel;

          (f)  Evidence  that all fees,  taxes,  premiums  and  amounts  owed in
               connection with the recording of the Mortgage and the issuance of
               the Title Insurance Policy,  including the Administrative Agent's
               fees and expenses, have been paid in full;

          (g)  Supplements  to the  Loan  Documents  perfecting  the  Collateral
               Agent's liens in the Mark's patents and trademarks, if any;

          (h)  A pledge security agreement on the Agent's standard form granting
               a security  interest in the shares of Napco Group Europe  Limited
               (48,750) shares), Alarm Lock systems, Inc. (100 shares) and Napco
               Americas (65 shares) (the  "Pledged  Stock")  together with legal
               opinions  from  counsel  relating  to the  effectiveness  of such
               security   interests   in   such   stock   satisfactory   to  the
               Administrative  Agent and the Required  Lenders and undated stock
               powers or similar  instruments  duly executed by each pledgor for
               such pledged shares.

     Section  3.  Waiver.  Non-compliance  by the  Borrower  with  the  covenant
contained in Section 8.1 (a) (i) of the Credit Agreement  requiring the ratio of
Consolidated Funded Debt to consolidated EBITDA to be no greater than 3.5 to 1.0
to the extent of  non-compliance  for the period  ended  12/30/08  solely to the
extent such ratio was 5.17 to 1.0 instead of the required ratio.

                                      - 3 -


     Section 4. Conditions Precedent. The amendments to the Credit Agreement set
forth in Section 2 hereof  and the  waiver  set forth in Section 3 hereof  shall
become  effective,  on the date of this First Amendment,  upon the execution and
delivery of this First Amendment by the Borrower,  the Administrative  Agent and
each of the Lenders and the satisfaction of the following conditions:

     (A) Certified Copies and Other Documents.  The  Administrative  Agent shall
have received  certificates of an officer of the Borrower dated the date of this
First Amendment certifying (y) no changes in the certificate of incorporation or
by-laws from the date of the  Agreement or attaching  copies of any  amendments,
(z) the  incumbency  and  specimen  signatures  of the  officers of the Borrower
executing any documents delivered to the Administrative Agent or a Lender by the
Borrower in connection herewith.

     (B) Approval of the  Administrative  Agent and Agent's  Counsel.  All other
documents and legal matters in connection with the transactions  contemplated by
this  First  Amendment  shall  be  satisfactory  in form  and  substance  to the
Administrative Agent and its counsel.

     Section 5.  Representations  and  Warranties.  The Borrower  represents and
warrants to the Lenders that the representations and warranties set forth in the
Credit  Agreement  and in the other Loan  Documents are true and complete on the
date of this First Amendment and as if made on and as of the date hereof (or, if
such  representation  or warranty is expressly  stated to have been made as of a
specific date, as of such specific date).

     Section 6. Borrower's Acknowledgments. The Borrower acknowledges and agrees
that the Borrower has no claims, counterclaims, offsets, or defenses to the Loan
Documents and the performance of the Borrower's obligations thereunder or if the
Borrower  did have any such  claims,  counterclaims,  offsets or defenses to the
Loan Documents or any transaction  related to the Loan  Documents,  the same are
hereby  waived,  relinquished  and released in  consideration  of execution  and
delivery of this Second Amendment.

     Section 7.  Acknowledgement of Guarantors.  The Guarantors  acknowledge and
consent to all of the terms and  conditions  of this First  Amendment  and agree
that this First Amendment and all documents  executed in connection  herewith do
not operate to reduce or discharge the Guarantors'  obligations under the Credit
Agreement or the other Loan Documents.  The Guarantors  further  acknowledge and
agree that the Guarantors have no claims, counterclaims, offsets, or defenses to
the Loan Documents and the performance of the Guarantors' obligations thereunder
or if the  Guarantors  did have  any  such  claims,  counterclaims,  offsets  or
defenses to the Loan Documents or any transaction related to the Loan Documents,
the same are hereby  waived,  relinquished  and  released  in  consideration  of
execution and delivery of this First Amendment.

                                      - 4 -


     Section 8. Continuing  Effect;  No Further Waiver.  Except as expressly set
forth in this  First  Amendment,  all of the  terms and  provisions  of the Loan
Documents are ratified and confirmed, and are and shall remain in full force and
effect  and the  Borrower  shall  continue  to be bound by all of such terms and
provisions.  The Waiver  provided for herein is limited as specified  herein and
shall not  constitute  any  other  waiver of the Loan  Documents.  The  Borrower
acknowledges  and  agrees  that  nothing  in this  Waiver  shall  constitute  an
indication  of the  Lenders'  willingness  to consent to any other  amendment or
waiver of any other provision of the Credit Agreement or a waiver of any Default
or Event of Default not referenced in this Waiver or for any other time period.

     Section 9. Governing Law;  Execution in Counterparts.  This First Amendment
may be executed in any number of counterparts, all of which taken together shall
constitute one and the same amendatory  instrument and any of the parties hereto
may execute  this First  Amendment by signing any such  counterpart.  This First
Amendment  shall be governed by, and construed in accordance  with, the internal
laws of the  State of New York  (without  regard to New York  conflicts  of laws
principles).

     Section 10.  Expenses,  etc.  The Borrower  agrees to pay or reimburse  the
Administrative Agent for all reasonable  out-of-pocket costs and expenses of the
Administrative  Agent (including,  without  limitation,  the reasonable fees and
expenses  of  Certilman,  Balin,  Adler &  Hyman,  LLP in  connection  with  the
negotiation,  preparation,  execution and delivery of this Second  Amendment and
the transactions contemplated hereby.

     Section 11.  Effective  Date. This First Amendment is dated for convenience
as of November 14, 2008 and shall be effective as of such date,  on the delivery
of an executed  counterpart to the Borrower upon  satisfaction of the conditions
precedent contained in Section 4 hereof.

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     IN WITNESS WHEREOF,  the parties hereto have caused this First Amendment to
Credit  Agreement  to be duly  executed and  delivered by their duly  authorized
officers, all as of the day and year first above written.

                                         Borrower:
                                         ---------

                                         NAPCO SECURITY SYSTEMS, INC.

                                         By:/s/KEVIN S. BUCHEL
                                            --------------------------------
                                                  Kevin S. Buchel
                                                  Senior Vice President of
                                                  Operations and Finance

                                         Guarantors:
                                         -----------

                                         ALARM LOCK SYSTEMS, INC.

                                         By:/s/KEVIN S. BUCHEL
                                            --------------------------------
                                         Name: Kevin S. Buchel
                                         Title: Senior Vice President

                                         CONTINENTAL INSTRUMENTS, LLC

                                         By: /s/KEVIN S. BUCHEL
                                            --------------------------------
                                         Name: Kevin S. Buchel
                                         Title: Manager

                                         Lenders:
                                         --------

                                         CAPITAL ONE, N.A.

                                         By:/s/LUCILLE MCARDLE
                                         Name: Lucille McArdle
                                         Title: Vice President


                                         HSBC BANK USA, NATIONAL ASSOCIATION,
                                         as Administrative Agent and as a Lender

                                         By:/s/GARY SARRO
                                            --------------------------------
                                         Name:Gary Sarro
                                         Title: First Vice President

                                      - 6 -


                                   SCHEDULE I
                                   ----------
                  To the Amended and Restated Credit Agreement


                                   COMMITMENTS
                                   -----------

Revolving Credit Commitment
- ---------------------------
- --------------------------------------------------------------------------------
Revolving Lender                                Revolving Credit Commitment
- --------------------------------------------------------------------------------
HSBC BANK USA, NATIONAL ASSOCIATION             $12,000,000
- --------------------------------------------------------------------------------
CAPITAL ONE, N.A.                               $ 8,000,000
- --------------------------------------------------------------------------------

     Total                                      $20,000,000
- --------------------------------------------------------------------------------

Term Commitment
- ---------------
- --------------------------------------------------------------------------------
      Term Lender                               Term Commitment
- --------------------------------------------------------------------------------
HSBC BANK USA, NATIONAL ASSOCIATION             $15,000,000
- --------------------------------------------------------------------------------
CAPITAL ONE, N.A.                               $10,000,000
- --------------------------------------------------------------------------------
     Total                                      $25,000,000
- --------------------------------------------------------------------------------

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