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