Fire detectors sense one or more of the products or phenomena resulting from fire, such as
smoke,
heat,
infrared and/or
ultraviolet light radiation, or
gas.
In dwellings, smoke detectors are often stand-alone devices. In non-domestic buildings, fire detection will typically take the form of a
fire alarm system
A fire alarm system warns people when smoke, fire, carbon monoxide or other fire-related or general notification emergency, emergencies are detected. These alarms may be activated automatically from smoke detectors and heat detectors or may also ...
, incorporating one or more of the following automatic devices:
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Heat detector
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Smoke detector
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Flame detector
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Fire gas detector
Detectors
Active fire protection