One thermistor is exposed to the ambient temperature, the other is sealed.
In normal conditions the two thermistors register similar temperatures, but on the developement 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.
A High Temperature sensor has a fixed upper limit, which would be suitable for places such as kitchens.
This unit comes with a sounder base which is fitted with electronic circuitry
to monitor the presence of detectors and signals any unauthorised removal of detector heads.
It is supplied with a high or low volume setting and caps are available for stand-alone installation.
Features of Detector
Dimensions: 100mm x 42mm
Fitted with 2 LEDs for 360° visibility