The beam operates totally on the basic principle of light obscuration making use of infrared. The OSI-RI detector is actually a mixed transmitter/receiver that can be directly linked to an smart detector circuit in LiteSpeed® or CLIP method. Unwelcome alarms mainly because of the beam getting totally obscured for a https://www.firesense.co.uk/type/addressable-fire-system/addressable-beam-detectors/