Smoke Detector / Apollo Alarm Head
The AlarmSense Optical Smoke Detector works using the light scatter principle. The detector changes to alarm state at a pre-set threshold of smoke penetration into the sensing chamber.
This is the Apollo 55000-317 conventional smoke detector – a series 65 optical smoke detector, coming without a base (the base needs to be ordered separately). It incorporates a pulsing LED located within the housing of the detector. The external detector moulding is identical to that of the ionisation detector, except that it has an indicator LED which is clear in quiescent state and produces a red light in alarm. They replace the Apollo 60 series, and they can fit within them.
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