PIR Dectector means passive infrared detector,PIR devices can detect a person moving into or through a detection zone with high reliability.Day or night, PIR devices can detect motion by sensing any thermal contrast between a moving object or person and a stationary background.
-The system is single ended, unlike light beam/laser barriers, which require aligned transmitters and receivers.
-The system is passive: Intruders can't detect the presence and location of the detectors (unlike radar systems).
-The detectors consume less power than IR- or radar-based units.
-They are unaffected by light, with the detectors working equally well day or night.
-Precision optics enable detectors to cover narrow areas accurately.
- Small size and unobtrusive design help the detectors blend in with their surroundings.


