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  2. Optical beam smoke detector - Wikipedia

    en.wikipedia.org/wiki/Optical_beam_smoke_detector

    An optical beam smoke detector is a device that uses a projected beam of light to detect smoke across large areas, [1] typically as an indicator of fire. [2] They are used to detect fires in buildings where standard point smoke detectors would either be uneconomical [ 3 ] or restricted for use by the height of the building.

  3. Infrared open-path detector - Wikipedia

    en.wikipedia.org/wiki/Infrared_open-path_detector

    An open path detector usually costs more than a single point detector, so there is little incentive for applications that play to a point detector's strengths: where the point detector can be placed at the known location of the highest gas concentration, and a relatively slow response is acceptable. The open path detector excels in outdoor ...

  4. File:Optical beam smoke detector.jpg - Wikipedia

    en.wikipedia.org/wiki/File:Optical_beam_smoke...

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  5. Smoke detector - Wikipedia

    en.wikipedia.org/wiki/Smoke_detector

    Smoke detector mounted on a ceiling Knowing this sound could save your life - it means replace the battery. A smoke detector is a device that senses smoke, typically as an indicator of fire. Smoke detectors/Alarms are usually housed in plastic enclosures, typically shaped like a disk about 125 millimetres (5 in) in diameter and 25 millimetres ...

  6. Category:Fire detection and alarm - Wikipedia

    en.wikipedia.org/wiki/Category:Fire_detection...

    Optical beam smoke detector; Q. Q2B; S. Smoke detector This page was last edited on 28 January 2024, at 05:24 (UTC). Text is available under the Creative ...

  7. File:Motorised reflective optical beam smoke detector.jpg

    en.wikipedia.org/wiki/File:Motorised_reflective...

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