purchaesed the above ke fob, but disarm does not work, i've tried your suggestion to another member setting the exit timer and activating it by opening and shutting the door in the count down but when i press disarm on the fob after opening the door when count down is in action it dont do anything, the alarm just goes off after the count down has finished.. and then i try disarm again when alarm is sounding and still nothing, i can only turn the alarm off on the keypad control.. please help, its soo frustrating!