Utilize everyday existing fluorescent lighting as emergency lighting. Emergency battery ballasts allow a linear or compact fluorescent (CFL) fixture to be used during both normal and emergency operation. In the event of a power failure, the emergency battery ballast operates the fixture, powering the lamp for a minimum of 90 minutes from the built-in backup battery. Use with 17-110 watts single pin or bi-pin fluorescent lamps (T8, T10, or T12) for 90 minutes. Operates one 8' lamp or two 4' lamps Meets or exceeds all NEC and Life Safety Code emergency lighting requirements