Multi sensor detector with two integrated optical smoke sensor having different scattered light angles and additional heat detector sensor evaluation for detection of smouldering fires up to open fires exhibiting uniform response behaviour. Comparison of the smoke sensor signals for smoke classification and reduction of deceptive alarms, caused, for example, by steam or dust. Its excellent detection properties also enable the detector to detect the test fires TF1 and TF6 described in the standard. The O²T intelligent detector is also suitable for higher application temperatures of up to +65C degrees.
