BS-661/A Waterproof rate of rise heat detector Informații despre produsThe detector BS-661/A was created to offer quick detection in case of fire. It detects the speed that the temperature of the room is increasing and when this speed exceeds a limit in a certain time period, it is triggered by giving an alarm signal to the fire detection panel or an other similar device. Horizontal TabsDocumentație User Manual Declaration of Performance Certificări DEDAL