Supplementary to Audible Alarms: VADs are specifically efficient in high-sounds parts or the place hearing protection is worn, supplementing traditional audible alarms. A VAD or Visual alarm device is usually a style of unexpected emergency alert process that provides a visible cue to men and women in the course of https://www.firesense.co.uk/type/addressable-fire-system/addressable-sounders-vids-vads/