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Apollo Series 65 Optical Smoke Detector

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The Apollo Series 65 Optical Smoke Detector detects smoke using an internal pulsing LED and a photo-diode at an obtuse angle.

£20.44
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Apollo Series 65 Conventional Heat Detector

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The self-extinguishing case of this detector houses a pair of negative temperature co-efficient thermistors to sense heat – one exposed to the ambient temperature and the other thermally insulated.

£21.99
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