A standard goal electronic sounder for hearth, safety and industrial programs; the Sonos Sounder Beacon is Accredited to EN54. The facility to Participate in all day long It is simple to maintain exploring when you've got approximately 12 several hours of battery existence.¹ Visual Alarms: Utilize light-weight to sign emergencies, https://www.firesense.co.uk/type/conventional-fire-system/conventional-sounders-vids-vads/