Panel will beep with any trouble, press STATUS to quiet keypad and find trouble
AC Power Failure AC transformer is bad or plug transformer in is not working
System Battery Failure Panel battery is low, replacement available at local branch only
Sensor Failure Wireless Zone has failed
Sensor Low Battery Wireless Sensor battery Low (System will say Zone)
Fail To Communicate System could not communicate with monitoring station
Sensor Open One or more zones are not closed