ADT Monitored Motion Sensor
A Motion Sensor is an essential part of your security system when the system is armed in the away mode. You do not arm the motion sensor when you are home. A motion sensor provides a second level of protection if an intruder is able to get past the perimeter protection without being detected. You should think of a motion sensor as a trap zone. Most burglars are headed for the master bedroom were most people have their jewelry, cash hidden, watches, guns, etc. The motion is setup as a trap zone typically in the hallway leading to the master bedroom in one story or the stairway in a 2 story home.