Visual Alarms: Make use of light to signal emergencies, Specially helpful in noisy settings and for the people with hearing impairments. So as to avoid discrimination, BS EN 54-23 compliant VADs could possibly be mounted in all sanitary accommodation (not merely WCs) and all lodge bedrooms, university student accommodation and https://kbookmarking.com/story18536390/vids-7-vads-an-overview