The FST-951R intelligent addressable detector from Honeywell NOTIFIER options level ID capability that permits Every detector handle for being established with rotary address switches to offer precise detector spots. The FSP-951 photoelectric detector’s exceptional optical sensing chamber is engineered to perception smoke produced by a wide range of combustion sources. https://www.firesense.co.uk/type/addressable-fire-system/addressable-beam-detectors/