Wireless Alarm System (490-2011) Addendum Faxback Doc. # 16941 When testing the transmitters as described on Page 16, Step 3, a door transmitter does not sound the alarm instantly, but causes the base to chirp once to indicate that the transmitter is functioning correctly. After about 45 seconds the alarm sounds. Enter the access code at the base to stop the alarm. A window transmitter sounds the alarm instantly as described on Page 16.