Model 420 Passive Infrared (PIR) Intrusion Sensor is an advanced
stand-alone sensor designed for specialized outdoor intrusion detection
applications. A four-zone, continuous and gap-free curtain sensing
pattern detects intruders by sensing temperature (heat radiation)
difference between the background scene and intruder. The pattern
includes long, medium and short range detection segments, plus a
controllable Creep Field that protects the area surrounding the
mounting pole, which eliminates the detection ‘dead zone’ characteristic
of traditional PIR sensors.
Minimal clear zone requirements for the Model 420’s detection pattern
make this sensor ideal for intrusion detection in very narrow
corridors.
