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Optical beam smoke detectors are the wide area smoke detection technology of choice, offering both excellent detection and value for money. With a high area of coverage per unit (as high as 1800 m for some units), optical beam smoke detectors also offer more simplified wiring, installation and maintenance than other detection types. As a result, optical beam smoke detectors are the best fire technology for wide area coverage.


How does an optical beam smoke detector work?

An optical beam smoke detector works on the principle of obscuration. The beam detector sends out an invisible infra-red (IR) beam of light that the receiver measures. If smoke is present in the air then this obscures, or blocks, the light received by the receiver, lowering the amount of light. When enough smoke is in the air, the infra-red (IR) light level will drop below a set level, which then triggers an alarm signal.