Apollo S65 Heat Detector

The Apollo S65 A1R (57oC) Rate of Rise heat detector operates by using a matched pair of thermistors to sense heat. One thermistor is exposed to the ambient temperature, the other is sealed. In normal conditions, the two thermistors register similar temperatures, but on the development of a fire, the temperature recorded by the exposed thermistor will increase rapidly, resulting in an imbalance of the thermistors and causing the detector to change to the alarm state.

Apollo S65 A1R, BR and CR are Rate of Rise detectors, designed to detect a fire as the temperature increases, but they also have a fixed upper limit at which the detector will go into alarm if the rate of temperature increase has been too slow to trigger the detector earlier.

Apollo CS detector is a fixed heat detector which only changes to the alarm state at a preset temperature.

Apollo S65 Heat Detector available From City Security Systems

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