Eleven. Notification Devices These gadgets ship a visual or audible notification to notify a constructing’s occupants to evacuate. These consist of a five-inch multi-colour touch Exhibit with a clear menu framework, a metal overall body to supply a neat flush complete, numerous Regulate keys in addition to various LED indicators. https://www.firesense.co.uk/type/addressable-fire-system/addressable-beam-detectors/