The Autronica BHH-31A/Ex is an analogue, addressable smoke detector, to detector combustion gases that mainly consist of visible (large) particles. The BHH-31A/EX measures the reflected infrared light in the measuring chamber.
The Autronica 116-BHH-31A/EX is not influenced by electrical radiance from mobile phones etc. The Autronica 116-BHH-31A/EX is suitable for use in hazardous areas zone 1 and zone 2, and is connected via the BZ-32 Zener Barrier.
According to EN-54 Part 7/9
14VDC ± 2 V
-20°C to +70°C
0 to 90% RH