The beam operates totally on the theory of light obscuration employing infrared. The OSI-RI detector is really a put together transmitter/receiver which can be straight linked to an intelligent detector circuit in LiteSpeed® or CLIP method. The FSP-951 photoelectric detector’s special optical sensing chamber is engineered to perception smoke made https://www.firesense.co.uk/type/addressable-fire-system/addressable-beam-detectors/