The IQ673HS Strobes is addressable multi-candela visual and audible signal appliances with light sources generated from a white LED, listed according to UL 1971, UL 1638 and UL 464 for indoor use. The LED light source offers superior performance, including low power consumption and long operating life. Each appliance has the intelligence to report its location (the device address) and status to the Fireguard series fire alarm control panels. Six levels of light output are selectable. Relative light outputs in horizontal and vertical dispersion from strobes mounted on walls/ceilings. The strobe appliances produce a flash rate of one flash per second over the Regulated Voltage Range. The temporal tone generated by the horn portion is designed as per ANSI and NFPA72 for standard emergency evacuation signaling requirements. The appliance has the feature that can synchronize multiple horns and/or strobes in a complete fire alarm system. The IQ673HR Horns are addressable audible signal appliances listed according to UL 464 for indoor use. The temporal tone generat ed by the horn portion is designed as per ANSI and NFPA72 for standard emergency evacuation signaling requirements. The horn has a feature that can synchronize multiple horns in a complete fire alarm system.