The GRF202 analogue addressable thermal detector is the same of the GRF200, except for the detection that is not with the optical principle, but thermal. A thermistor, situated in the centre of the detector, supervises ambient ...
Voir plus.....The GRF202 analogue addressable thermal detector is the same of the GRF200, except for the detection that is not with the optical principle, but thermal. A thermistor, situated in the centre of the detector, supervises ambient temperature with low thermal inertia, allowing the product to achieve the EN54/5 A1R, A1, and BS class detector.