FEATURES:- Completely self-contained- Fully automatic operation- Compact, low-profile design in neutral finish- Push-to-test switch- 6-Volt, sealed lead acid, rechargeable, maintenance-free battery- Environmentally-coated, solid state charger- Automatic, low voltage disconnect (LVD)- Universal transformer for 120 or 277 VAC operation- Standard with two 5.4 watt, glare-free lighting lenses- Injection-molded, V-O flame retardant, high-impact thermoplastic housing- Charge rate/power on LED indicator light