Visible Alarms: Hire light to sign emergencies, Specifically productive in noisy options and for the people with hearing impairments. As a way to steer clear of discrimination, BS EN fifty four-23 compliant VADs could be put in in all sanitary accommodation (not only WCs) and all resort bedrooms, scholar accommodation https://www.firesense.co.uk/type/addressable-fire-system/addressable-sounders-vids-vads/