The beam operates totally on the principle of light obscuration working with infrared. The OSI-RI detector is a blended transmitter/receiver that may be immediately connected to an clever detector circuit in LiteSpeed® or CLIP manner. Power and connectivity occur in the imager only as well as the OSID-R only needs https://www.firesense.co.uk/type/addressable-fire-system/addressable-beam-detectors/