Supplementary to Audible Alarms: VADs are significantly effective in large-sound parts or where hearing safety is worn, supplementing classic audible alarms. A VAD or Visual alarm unit is actually a type of emergency inform system that provides a visible cue to people today during an crisis. The base incorporates a https://www.firesense.co.uk/type/addressable-fire-system/addressable-sounders-vids-vads/