Supplementary to Audible Alarms: VADs are especially powerful in significant-sounds locations or in which Listening to defense is worn, supplementing common audible alarms. Universal Recognition: VADs are created to supply a universal warning sign that is definitely recognizable by All people, despite their volume of hearing or cognitive ability. Where https://www.firesense.co.uk/type/addressable-fire-system/addressable-sounders-vids-vads/