Supplementary to Audible Alarms: VADs are particularly efficient in large-sounds regions or exactly where hearing protection is worn, supplementing conventional audible alarms. Simply click here To learn more on the kinds of cookies we use and how to alter your cookie options. Simply click "Drop" to reject, or "Customise" to https://www.firesense.co.uk/type/addressable-fire-system/addressable-sounders-vids-vads/