FALSE ALARM FROM DOOR SENSOR
Armed my system at 8:27 pm
REAR DOOR sensor has "communication failure" at 8:49 pm
REAR DOOR sensor has "communication restored" at 1:35 am
ALARM at 1:36 am "rear door opened"
Rear door "Open& Closed" at 1:36 am
Rear door "Open& Closed" at 1:36 am (yes this shows up twice)
DISARMED at touchscreen at 1:36 am (by me)
QUESTION: It was my understanding that a communication failure could not cause an alarm. What caused this one?
I've had this system for a long time and this is our first false door sensor event. The door was closed and locked when I found it. My cameras showed no activity. It was a true false alarm.