The beam operates totally on the basic principle of sunshine obscuration using infrared. The OSI-RI detector is really a blended transmitter/receiver that could be right connected to an smart detector circuit in LiteSpeed® or CLIP mode. I conform to Ampac giving software package updates, solution updates, offers and promotions by https://www.firesense.co.uk/type/addressable-fire-system/addressable-beam-detectors/