bn:02997910n
Noun Concept
Categories: Safety equipment, Detectors, Active fire protection, Fire detection and alarm
EN
optical beam smoke detector  beam detector  open-area smoke imaging detection
EN
An optical beam smoke detector is a device that uses a projected beam of light to detect smoke across large areas, typically as an indicator of fire. Wikipedia
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EN
An optical beam smoke detector is a device that uses a projected beam of light to detect smoke across large areas, typically as an indicator of fire. Wikipedia
Type of smoke detector Wikidata