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.