Visible Alarms: Use gentle to sign emergencies, especially efficient in noisy settings and for all those with hearing impairments. A VAD or Visual alarm gadget can be a style of crisis alert program that gives a visible cue to people today throughout an emergency. Facts Dissemination for End users: Designers https://www.firesense.co.uk/type/addressable-fire-system/addressable-sounders-vids-vads/