Supplementary to Audible Alarms: VADs are significantly effective in large-sound parts or where hearing defense is worn, supplementing common audible alarms. Mobilie telefoni > Mobilo telefonu aksesuāri > Apple iPhone > Uzlādes ierīces/lādētāji/datu kabeļi Where a specification requires visual units, it should be assumed that each one devices are BS https://www.firesense.co.uk/type/addressable-fire-system/addressable-sounders-vids-vads/