The beam operates totally on the theory of light obscuration using infrared. The OSI-RI detector is usually a put together transmitter/receiver that could be right connected to an intelligent detector circuit in LiteSpeed® or CLIP manner. The FSP-951 photoelectric detector’s unique optical sensing chamber is engineered to perception smoke made https://www.firesense.co.uk/type/addressable-fire-system/addressable-beam-detectors/