Visual Alarms: Use mild to sign emergencies, Primarily productive in noisy settings and for the people with hearing impairments. Universal Recognition: VADs are made to supply a universal warning signal that is definitely recognizable by Everybody, regardless of their degree of hearing or cognitive potential. Simply click "Decrease" to reject, https://www.firesense.co.uk/type/addressable-fire-system/addressable-sounders-vids-vads/