UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, DC  20549

                                  FORM 10-K/A

(Mark One)

[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                          0-13716
                       -------------------------------------------------


                         North Pittsburgh Systems, Inc.
- ------------------------------------------------------------------------
             (Exact name of registrant as specified in its charter)


         Pennsylvania                            25-1485389
 -----------------------------         --------------------------------
 (State or other jurisdiction of       (IRS Employer Identification No.)
 incorporation or organization)


4008 Gibsonia Road, Gibsonia, Pennsylvania           15044-9311
- ------------------------------------------    ------------------------
 (Address of Principal Executive Offices)             (Zip Code)


Registrant's telephone number, including area code         724/443-9600
                                                    -------------------------



                                AMENDMENT NO. 1

      The undersigned Registrant hereby amends the Independent Auditors' Report
of its Annual Report on Form 10-K for the year ended December 31, 1999 as set
forth in the pages attached hereto:


                          INDEPENDENT AUDITORS' REPORT


The Board of Directors

North Pittsburgh Systems, Inc.:


We have audited the consolidated financial statements of North Pittsburgh
Systems, Inc. and subsidiaries (the Company) as listed in the accompanying
index. In connection with our audits of the consolidated financial statements,
we also have audited the financial statement schedule as listed in the
accompanying index. These consolidated financial statements and financial
statement schedule are the responsibility of the Company's management. Our
responsibility is to express an opinion on these consolidated financial
statements and financial statement schedule based on our audits.

We conducted our audits in accordance with generally accepted auditing
standards. Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements are free of material
misstatement. An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the financial statements. An audit also includes
assessing the accounting principles used and significant estimates made by
management, as well as evaluating the overall financial statement presentation.
We believe that our audits provide a reasonable basis for our opinion.

In our opinion, the consolidated financial statements referred to above present
fairly, in all material respects, the financial position of North Pittsburgh
Systems, Inc. and subsidiaries at December 31, 1999 and 1998, and the results of
their operations and their cash flows for each of the years in the three-year
period ended December 31, 1999, in conformity with generally accepted accounting
principles. Also, in our opinion, the related financial statement schedule,
when considered in relation to the basic consolidated financial statements taken
as a whole, presents fairly, in all material respects, the information set forth
therein.


                                          KPMG LLP

Pittsburgh, Pennsylvania
February 28, 2000


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                                   SIGNATURES




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




                         NORTH PITTSBURGH SYSTEMS, INC.
                         ------------------------------
                                   Registrant



By  /s/  H. R. Brown                  By  /s/  C. E. Thomas, Jr.
   ------------------------------        ----------------------------
   H. R. Brown                           C. E. Thomas, Jr.
   President, Director, and              Chairman of the Board
   Principal Executive Officer


Date        April 13, 2000            Date       April 13, 2000
     ----------------------------          --------------------------


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      Pursuant to the requirements of the Securities Exchange Act of 1934, this
report has been signed below by the following persons on behalf of the
Registrant and in the capacities and on the dates indicated.



By  /s/  A. P. Kimble
   ------------------------------------------
   A. P. Kimble
   Director, Vice President, Treasurer and
   Principal Financial and Accounting Officer



Date            April 13, 2000
     ----------------------------------------



By  /s/  C. E. Cole
   ------------------------------------------
   C. E. Cole
   Director



Date            April 13, 2000
     ----------------------------------------


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