Visibility and Range: Make sure visual alarms are adequately many and positioned strategically to generally be visible from all regions. In order to avoid discrimination, BS EN fifty four-23 compliant VADs may very well be mounted in all sanitary accommodation (not merely WCs) and all lodge bedrooms, university student accommodation https://www.firesense.co.uk/type/addressable-fire-system/addressable-sounders-vids-vads/