Using 4 zones allows tracking of more...
With a dual zone sensor, an intruder must cross the positive and negative fields of two zones before an alarm is...
In a single zone detector, an alarm will be indicated when an intruder moves across one positive and one negative...
Each sensor zone is made up of two fields of view, one positive and one...
The PIR Sensor is a pyroelectric device that measures infrared (IR) light radiating from objects in its field of...