110 candela horn strobe wall mount Fire Alarm Output DevicesSignals are hardwired from a control panel (sold separately).UL and C-UL Listed, CSFM Approved. Edwards fire alarm and horn strobes are UL 1971 listed for the hearing impaired. Ceiling speaker 6VEZ2 is UL listed 1480 for use as a fire alarm signalling device.Audible and Visual SignalsG3854, 5KDF9, and 5KDG0 for outdoor use when used with Weatherproof Back Box G3855.