Supplementary to Audible Alarms: VADs are significantly effective in superior-sound locations or where by hearing protection is worn, supplementing regular audible alarms. A VAD or Visual alarm product is really a style of emergency inform process that provides a visual cue to persons throughout an unexpected emergency. Click "Decline" to https://www.firesense.co.uk/type/addressable-fire-system/addressable-sounders-vids-vads/