EXHIBIT 23.1

            CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the incorporation by reference in the registration statements on
Form S-8 (numbers 333-104700 and 333-14743) of Napco Security Systems, Inc. of
our report dated September 14, 2004, appearing in this annual report on Form
10-K of Napco Security Systems, Inc. for the year ended June 30, 2004.

Woodbury, New York
September 23, 2004

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