The beam operates totally on the principle of sunshine obscuration employing infrared. The OSI-RI detector is really a put together transmitter/receiver that could be immediately linked to an smart detector circuit in LiteSpeed® or CLIP mode. Undesired alarms due to the beam getting absolutely obscured for a brief period of https://www.firesense.co.uk/type/addressable-fire-system/addressable-beam-detectors/