Exhibit 4(h)



                    [American Medical Alert Corp. Letterhead]


December 20, 1996


Mr. William F. Seegraber, Vice President                    VIA FAX 212 509-5150
Continental Stock Transfer & Trust Company                   HARD COPY TO FOLLOW
2 Broadway
New York, NY  10004

Gentlemen:

Reference is made to that certain Warrant  Agreement  between  American  Medical
Alert Corp. (the "Company") and Continental  Stock Transfer & Trust Company (the
"Warrant Agreement"),  dated September 23, 1992, with regard to the Common Share
Purchase Warrants issued by the Company (the "Warrants").

The Warrant  Agreement is hereby amended to provide that the expiration  date of
the Warrants is extended from December 27, 1996 until December 26, 1997.


                                                    Very truly yours,
                                                    AMERICAN MEDICAL ALERT CORP.



                                                    By:/S/ HOWARD M. SIEGEL
                                                       -----------------------
                                                       Howard M. Siegel
                                                       President/CEO

Agreed to:

CONTINENTAL STOCK TRANSFER & TRUST CO.



By:/S/ WILLIAM SEEGRABER
  ------------------------

cc:  Corey Aronin, AMAC
     Parker Chapin Flattau & Klimpl