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  2. 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.

  3. 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.

  4. Whisk broom scanner - Wikipedia

    en.wikipedia.org/wiki/Whisk_broom_scanner

    The size of the subset may change between a single pixel (one square) or a spotlight (multiple squares) but the motion remains the same. A whisk broom or spotlight sensor, also known as an across-track scanner, is a technology for obtaining satellite images with optical cameras. [1] It is used for passive remote sensing from space.

  5. Mmwave sensing - Wikipedia

    en.wikipedia.org/wiki/Mmwave_sensing

    mmWave sensing can be used inside vehicles to improve driver and passenger safety and comfort functions. [6] Notable advantages of using mmWave technology in vehicles revolve around its capability to operate effectively in spaces with low-lighting and limited visibility. mmWave sensing can penetrate materials like plastic, textiles, and glass, making it a contactless.

  6. Lighting control system - Wikipedia

    en.wikipedia.org/wiki/Lighting_control_system

    A complete sensor consists of a motion detector, an electronic control unit, and a controllable switch/relay. The detector senses motion and determines whether there are occupants in the space. [9] It also has a timer that signals the electronic control unit after a set period of inactivity.

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