The beam operates primarily on the principle of sunshine obscuration employing infrared. The OSI-RI detector is really a combined transmitter/receiver that could be immediately connected to an clever detector circuit in LiteSpeed® or CLIP mode. Electricity and connectivity take place within the imager only plus the OSID-R only demands a https://www.firesense.co.uk/type/addressable-fire-system/addressable-beam-detectors/