Supplementary to Audible Alarms: VADs are significantly successful in superior-sounds locations or the place Listening to security is worn, supplementing conventional audible alarms. A VAD or Visual alarm system is really a variety of crisis inform procedure that gives a visual cue to persons all through an unexpected emergency. The https://www.firesense.co.uk/type/addressable-fire-system/addressable-sounders-vids-vads/