Twin-beam unit automatically goes on when power fails, providing 90 minutes of emergency lighting. Solid state automatic charger with combination LED pilot light/test switch. Attractive polycarbonate casing with swiveling heads. 120/277 volt input. Sealed maintenance-free battery lasts up to eight years. UL Listed. NEC, Life Safety Code and OSHA compliant. Manufacturer’s five-year warranty. 12-1/8w x 4d x 5-1/2h. Shpg. wt. 5 lbs.