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  2. Passive infrared sensor - Wikipedia

    en.wikipedia.org/wiki/Passive_infrared_sensor

    When a PIR sensor is configured in a differential mode, it specifically becomes applicable as a motion detector device. In this mode, when a movement is detected within the "line of sight" of the sensor, a pair of complementary pulses [ 4 ] are processed at the output pin of the sensor.

  3. Security alarm - Wikipedia

    en.wikipedia.org/wiki/Security_alarm

    A passive infrared sensor used to detect motion. 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 ...

  4. Motion detector - Wikipedia

    en.wikipedia.org/wiki/Motion_detector

    A motion detector attached to an outdoor, automatic light. A motion detector is an electrical device that utilizes a sensor to detect nearby motion (motion detection).Such a device is often integrated as a component of a system that automatically performs a task or alerts a user of motion in an area.

  5. 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]

  6. What officials are doing – and suggesting – to learn more ...

    www.aol.com/news/officials-doing-suggesting...

    Any “realistic approach” to tracking drones has to use data from multiple different sensors, Kumar said. And “deep learning algorithms,” which can combine multiple types of data and ...

  7. 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.

  8. Electrical contact - Wikipedia

    en.wikipedia.org/wiki/Electrical_contact

    Contacts may be operated by humans in push-buttons and switches, by mechanical pressure in sensors or machine cams, and electromechanically in relays. The surfaces where contacts touch are usually composed of metals such as silver or gold alloys [ 3 ] [ 4 ] that have high electrical conductivity , wear resistance, oxidation resistance and other ...

  9. Transgender volleyball controversy: Judge rules San Jose ...

    www.aol.com/sports/transgender-volleyball...

    A San Jose State women’s volleyball player is eligible to play in her conference tournament this week, a federal judge in Denver ruled Monday, despite complaints from competitors who object to ...

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