Model 420 Passive Infrared Intrusion Sensor is an advanced stand-alone sensor that can detect to 122 m (400 ft) and has minimal clear zone requirements, making this sensor ideal for intrusion detection in very narrow corridors. 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. The latest detector and signal processing technology, plus precision mirror optics, allow Model 420 to operate in broad-ranging environments.
Perimeter, Open Area, Airport Facilities Outdoor, Perimeter Boundary, Perimeter Gate, Perimeter Natural Barrier, Perimeter Wide Area, Range 50-250 Meters, Infrared, Thermal