The beam operates totally on the theory of light obscuration utilizing infrared. The OSI-RI detector is really a mixed transmitter/receiver that may be straight connected to an intelligent detector circuit in LiteSpeed® or CLIP manner. I agree to Ampac providing software program updates, product updates, offers and promotions by using https://www.firesense.co.uk/type/addressable-fire-system/addressable-beam-detectors/