Supplementary to Audible Alarms: VADs are specifically helpful in high-noise regions or wherever Listening to protection is worn, supplementing conventional audible alarms. Assignments slide into the subsequent categories: video; pictures; art; inside style and design and architectural scientific studies; textile and attire administration; strategic communications and graphic structur... https://www.firesense.co.uk/type/addressable-fire-system/addressable-sounders-vids-vads/