The FW2963 Horn Strobe, FW2973 Horn are a family of low frequency visual and/or audible signal appliances with light sources generated from white LED, listed according to UL 1971, UL 1638, UL 464, ULC-S525 and ULC-S526 for indoor use.

Studies have shown that low frequency audible devices that operate around 520Hz are more effective in waking individuals in sleeping areas. These two appliances are intended to provide a low frequency audible or audible/visible, notification signal for the purpose of life safety and property protection. They can be configured as both conventional and addressable manners.

The LED light source offers superior performance, including low power consumption and long operating life. When working as addressable manner, each appliance has the intelligence to report its location (the device address) and status to the FireWatcher series FACP. Six levels of light output, two levels of sound outputs are selectable.

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 requirement. The NFPA72, requires that audible appliances installed in sleeping areas produce a low frequency alarm signal that shall be a square wave or provide equivalent awakening ability (effective Jan.1,2014).

The appliance has the feature that can synchronize multiple horn and/or strobes based on loop.