EXHIBIT 23.1

             INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM'S CONSENT


We consent to the  incorporation by reference in the  Registration  Statement of
NAPCO Security Systems, Inc. and Subsidiaries on Form S-8, File No. 333-14743 of
our  report  dated  September  30,  2008,  with  respect  to our  audits  of the
consolidated  financial statements and related consolidated  financial statement
schedules of NAPCO Security  Systems,  Inc. and Subsidiaries as of June 30, 2008
and 2007 and for the years  ended  June 30,  2008,  2007 and 2006 and our report
dated September 30, 2008 with respect to our audit of management's assessment of
the effectiveness of internal control over financial reporting of NAPCO Security
Systems,  Inc. and  Subsidiaries as of June 30, 2008, which reports are included
in this Annual Report on Form 10-K of NAPCO Security Systems,  Inc. for the year
ended June 30, 2008.

Our report on the  effectiveness  of internal  control over financial  reporting
expressed an adverse opinion because of the existence of material weaknesses.

Our report on the consolidated  financial  statements  refers to a change in the
method of  accounting  for  uncertain  tax  positions  in  accordance  with FASB
Interpretation  48, "Accounting for Uncertainty in Income Taxes - an Integration
of FASB Statement No. 109" on July 1, 2007.


/s/ Marcum & Kliegman LLP


Marcum & Kliegman LLP
Melville, New York
September 30, 2008