The Autronica BHH-31A/S/EX is an Optical Smoke Detector, for use in Zone 1 and Zone 2 and with extra high sensitivity, which detects combustion gases consisting of visible particles. The BHH-31A/S/EX is not influenced by electrical radiance from mobile telephones etc.
The Autronica BHH-31A/S/EX is also known as:
BHH31A/S/EX
BHH-31A-S-EX.