The Apollo XP95 55000-440APO is an intrinsically safe (I.S.) heat detector. The Apollo 55000-440APO monitors the temperature by using a single thermistor which provides a count output that is proportional to the external air temperature.
The Apollo XP95 55000-440APO has a common profile with the ionisation and and optical smoke detectors, but has a low air flow resistance case that is made out of white polycarbonate. The 55000-440APO monitors the heat using a single thermistor network which provides a voltage output that is proportional to the external air temperature.
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