Supplementary to Audible Alarms: VADs are significantly powerful in higher-noise parts or the place hearing security is worn, supplementing standard audible alarms. Click the link To find out more on the categories of cookies we use and the way to improve your cookie settings. This automatic procedure really should be https://www.firesense.co.uk/type/addressable-fire-system/addressable-sounders-vids-vads/