Supplementary to Audible Alarms: VADs are particularly effective in superior-sounds spots or wherever Listening to defense is worn, supplementing standard audible alarms. Just click here To learn more on the categories of cookies we use and the way to transform your cookie configurations. Much better documentation and reporting capabilities: Appliance https://www.firesense.co.uk/type/addressable-fire-system/addressable-sounders-vids-vads/