... injection-molded thermoplastic ABS housing, Ni-cd battery backup, led exit sign,exit lightInjection-molded thermoplastic ABS housing, white or black color ... operation. Low energy consumption-only 2.4 watts at 120V.LED indicator light and push button test switch. LEDS mounted on print ... to the battery. We're the professional manufacturer of led exit sign, emergenyc exit sign, welcome to contact us.