Supplementary to Audible Alarms: VADs are especially helpful in substantial-noise spots or the place hearing defense is worn, supplementing standard audible alarms. Click this link For more info on the kinds of cookies we use and the way to change your cookie settings. Click "Decline" to reject, or "Customise" to https://www.firesense.co.uk/type/addressable-fire-system/addressable-sounders-vids-vads/