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  2. Passive infrared sensor - Wikipedia

    en.wikipedia.org/wiki/Passive_infrared_sensor

    A 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-based motion detectors . PIR sensors are commonly used in security alarms and automatic lighting applications.

  3. Occupancy sensor - Wikipedia

    en.wikipedia.org/wiki/Occupancy_sensor

    Occupancy sensor types include: PIR sensors, which work on heat difference detection, measuring infrared radiation.Inside the device is a pyroelectric sensor which can detect the sudden presence of objects (such as humans) who radiate a temperature different from the temperature of the background, such as the room temperature of a wall.

  4. Camera trap - Wikipedia

    en.wikipedia.org/wiki/Camera_trap

    A camera trap with a passive infrared (PIR) sensor. A camera trap is a camera that is automatically triggered by motion in its vicinity, like the presence of an animal or a human being. It is typically equipped with a motion sensor—usually a passive infrared (PIR) sensor or an active infrared (AIR) sensor using an infrared light beam. [1]

  5. Motion detector - Wikipedia

    en.wikipedia.org/wiki/Motion_detector

    Often, PIR technology is paired with another model to maximize accuracy and reduce energy use. [citation needed] PIR draws less energy than emissive microwave detection, and so many sensors are calibrated so that when the PIR sensor is tripped, it activates a microwave sensor.

  6. Infrared detector - Wikipedia

    en.wikipedia.org/wiki/Infrared_detector

    Prototype of high-speed infrared detector installed on the PIONIER instrument at ESO’s Paranal Observatory. [1]An infrared detector is a detector that reacts to infrared (IR) radiation.

  7. North Carolina parent arrested for choking student inside ...

    www.aol.com/news/north-carolina-parent-arrested...

    A North Carolina father was arrested Monday after allegedly storming into a high school and choking a teenage student in a caught-on-video attack. Quinton Lofton, 43, was charged with felony ...

  8. Ohio governor signs transgender bathroom ban for students - AOL

    www.aol.com/ohio-governor-signs-transgender...

    Republican Ohio Gov. Mike DeWine has signed a transgender bathroom ban for students into law. The law requires students in the state's K-12 schools, as well as colleges and universities, to use ...

  9. Security alarm - Wikipedia

    en.wikipedia.org/wiki/Security_alarm

    The passive infrared (PIR) motion detector is one of the most common sensors found in household and small business environments. This sensor does not generate or radiate energy; it works entirely by detecting the heat energy given off by other objects. PIR sensors identify abrupt changes in temperature at a given point.

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