Specifications: Combination energy saving exit sign and emergency lighting unit in one compact, modern design. Energy consumption of less than 2 watts for red letters And less than 1 watt for green letters. LED lamp life of 25 years. Push to test switch. 6-Volt premium grade, pure lead battery. Environmentally-coated, solid state charger. Automatic, low voltage disconnect(LVD). Universal transformer for 120 or 277 VAC operation. Standard with two fully adjustable, glare-free lighting heads. Injection-molded, V-O flameretardant, high impact, thermoplastic housing. Charge rate/power on LED indicator light.