The detector includes a different controller unit which makes it possible for engineers to commission, watch and maintain from ground stage. Detection vary is 70 m for the common device, growing to 140 m or 160 m With all the addition with the medium or extended-assortment reflector kits. The 302-ET-194 https://www.firesense.co.uk/type/addressable-fire-system/addressable-beam-detectors/