Protect everything and everyone that is most important to you with this integrated 120 V AC wire-in smoke and carbon monoxide alarm. It has a 10-year sealed battery backup and LED strobe light that provides temporal patterns, visual and voice warnings. It is equipped with a 177 candela strobe light (powered by Cree LEDs), designed to notify the deaf and hard of hearing and meets Visual Signaling Requirement for Ontario Building Code. The unique low-profile design measures only 5.8 cm (2.3") in height, when mounted and is cUL- and CSA-listed.