EXHIBIT 32.2

                    CERTIFICATION BY CHIEF FINANCIAL OFFICER
                       PURSUANT TO 18 U.S.C. SECTION 1350,
                             AS ADOPTED PURSUANT TO
                  SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

         In connection with the Quarterly Report of Numerex Corp (the "Company")
on Form 10-Q as filed with the Securities and Exchange Commission on the date
hereof (the "Report"), I, Alan B. Catherall, as Chief Financial Officer of the
Company, hereby certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant
to Section 906 of the Sarbanes-Oxley Act of 2002, to the best of my knowledge,
that:

         (1)      The Report fully complies with the requirements of section
13(a) of the Securities Exchange Act of 1934; and

         (2)      The information contained in the Report fairly presents, in
all material respects, the financial condition and results of operations of the
Company for the dates and periods covered by the Report.

         This certificate is being made for the exclusive purpose of compliance
by the Chief Financial Officer of the Company with the requirements of Section
906 of the Sarbanes-Oxley Act of 2002, and may not be disclosed, distributed or
used by any person or for any reason other than as specifically required by law.

November 12, 2003                           /s/ Alan B. Catherall
                                            -------------------------
                                            Alan B. Catherall
                                            Chief Financial Officer

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