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Contact SupplierA passive infrared sensor (PIR sensor) is an electronic sensor that measures infrared (IR) light radiating from objects in its field of view. They are most often used in PIR are commonly used in security alarms and automatic lighting applications. PIR sensors are commonly called simply "PIR ", or sometimes "PID ", for "passive infra term passive refers to the fact that PIR devices do not radiate energy for detection purposes. They work entirely by detecting infrared radiation (radiant heat) emitted by or reflected from objects. Applications of Integrated PIR Sensor: All outdoor Lights Lift Lobby Multi Apartment Complexes Common staircases For Basement or Covered Parking Area Shopping Malls