The beam operates primarily on the theory of light obscuration using infrared. The OSI-RI detector is usually a put together transmitter/receiver that could be specifically linked to an smart detector circuit in LiteSpeed® or CLIP mode. Undesirable alarms mainly because of the beam becoming absolutely obscured for a brief time https://www.firesense.co.uk/type/addressable-fire-system/addressable-beam-detectors/