The Edwards 51 series AdaptaBeacon® flashing lights with horns are designed to provide a bright visual indication utilizing special optics within a shatter-resistant polycarbonate lens. The polycarbonate double fresnel lens ensures efficient light dispersion. This is accomplished with a series of complementing fresnels that cause the dome to "fill" when the light is operating. Beam distance is also increased with fresnel lenses. Lenses are available in six colors: red, amber, blue, green, magenta and clear. The unique base design allows horn audibility while maintaining the unit's weather-proof integrity. Designed for indoor or outdoor installation. May be direct, 1/2 in conduit or box mounted on a 4 in octagon box. For weather-proof installation, units must be mounted vertically with lens facing up. May be corner mounted indoors using the catalog no. CBR, corner mount bracket or wall mounted indoors using the catalog no. WBR, wall mount bracket. For additional protection against breakage, use catalog no. 92-GRD lens guard. See AdaptaBeacon® Accessories. Edwards flashing lights with horns can advise personnel in manufacturing, process and commercial areas when an operation is starting or stopping. Often used in airport baggage carousels. Usually used for signaling equipment malfunctions, security intrusions or pinpointing problem locations. Can warn personnel that they are entering a restricted area or an area of high danger. May be used where a smaller light output is desired or where many multiple smaller flashing lights are specified.