Visual Alarms: Employ light-weight to sign emergencies, Specifically efficient in noisy configurations and for anyone with hearing impairments. So as to steer clear of discrimination, BS EN fifty four-23 compliant VADs might be mounted in all sanitary accommodation (not simply WCs) and all hotel bedrooms, scholar accommodation and equivalent properties, https://www.firesense.co.uk/type/addressable-fire-system/addressable-sounders-vids-vads/