Supplementary to Audible Alarms: VADs are significantly productive in substantial-sound locations or where Listening to defense is worn, supplementing standard audible alarms. Plenty of People completed video clips, I believe, will appear like recorded PowerPoint displays or Meet up with phone calls or All those now-ubiquitous teaching films where by https://www.firesense.co.uk/type/addressable-fire-system/addressable-sounders-vids-vads/