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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. Optical beam smoke ...

  3. The Best Place to Put Your Smoke Detector (Plus 3 Spots ... - AOL

    www.aol.com/lifestyle/best-place-put-smoke...

    Replace smoke detectors at least every 10 years: Don't place your life in the hands of an outdated smoke alarm. For the most part, you can plan on replacing your smoke detector at least every 10 ...

  4. Smoke detector - Wikipedia

    en.wikipedia.org/wiki/Smoke_detector

    In large open areas such as atria and auditoriums, optical beam or projected-beam smoke detectors are used instead of a chamber within the unit: a wall-mounted unit emits a beam of infrared or ultraviolet light which is either received and processed by a separate device or reflected to the receiver by a reflector. In some types, particularly ...

  5. 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 ...

  6. If you live in Illinois, you need an updated smoke detector ...

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  7. Category:Detectors - Wikipedia

    en.wikipedia.org/wiki/Category:Detectors

    Most articles on devices that would be considered "detectors" are in category:measuring instruments ... Optical beam smoke detector; P. Phase detector characteristic;

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