Visual Alarms: Make use of gentle to sign emergencies, In particular powerful in noisy configurations and for all those with hearing impairments. Tasks drop into the next classes: video; images; artwork; interior style and design and architectural research; textile and clothing management; strategic communications and graphic structure; theatre; and an https://www.firesense.co.uk/type/addressable-fire-system/addressable-sounders-vids-vads/