Federal Signal's Visalert® is a three dimensional, triangular warning light designed to be mated with Federal Signal's model 350 Vibratone® horn and the model 50GC SelecTone® speaker/amplifier. The Visalert® can also be used as a stand-alone device. Visalert® is available in five lens colors: amber, blue, clear, green and red. Knockouts on-the 50GC, 350 and the 450 audible devices (sold separately) ensure easy installation. The units can be either independently or simultaneously wired with the audible device. The Visalert® uses a linear strobe tube and all the circuitry is contained within the lens. Visalert® units are recommended for use in industrial applications and situations where effective visual warning is needed. The Visalert® can be surface mounted on-the model 350 and 450 horn or model 50GC speaker/amplifier. Federal Signal's Visalert® strobe light is an affordable, low maintenance strobe light in a compact size that is perfect for control panel applications.