Supplementary to Audible Alarms: VADs are notably successful in high-sounds locations or in which hearing defense is worn, supplementing classic audible alarms. Determined by what I’ve noticed of Vids to this point, it appears to be about what you’d get if you reworked Google Slides right into a video app. https://www.firesense.co.uk/type/addressable-fire-system/addressable-sounders-vids-vads/