Notably helpful for your Deaf or challenging of hearing, particularly in situations where by visual alarms may well go unnoticed. It’s important that these sounders and visual alarm products are prominently marked with “FIRE ALARM” for apparent identification. Merged sounder and Visible indicator bases for conventional fire alarms are units https://www.firesense.co.uk/type/conventional-fire-system/conventional-sounders-vids-vads/