Temperature (heat) detectors have a common profile with ionization and optical smoke detectors but have a low air flow resistance case made of self-extinguishing white polycarbonate. They monitor temperature by using a single thermistor network which provides a voltage output proportional to the external air temperature.
The response to temperature increases of the standard temperature detector enables the detector to be utilised as an EN54 Grade 2 heat detector.
Detector Principle: Linear approximation over temperature range 25°C to 90°C
Sensitivity: 25°C to 90°C: 1°C/Count. -20°C returns 8 counts