The beam operates totally on the principle of light obscuration making use of infrared. The OSI-RI detector is often a put together transmitter/receiver that can be straight connected to an intelligent detector circuit in LiteSpeed® or CLIP mode. Power and connectivity occur while in the imager only plus the OSID-R https://www.firesense.co.uk/type/addressable-fire-system/addressable-beam-detectors/