The beam operates primarily on the principle of sunshine obscuration making use of infrared. The OSI-RI detector is really a put together transmitter/receiver which can be straight linked to an smart detector circuit in LiteSpeed® or CLIP manner. I comply with Ampac supplying program updates, merchandise updates, provides and promotions https://www.firesense.co.uk/type/addressable-fire-system/addressable-beam-detectors/