FeaturesIntelliVolt multiple voltage technology enables operation from 120 to 277 VAC, 50/60 HzPhilips Advance fluorescent electronic and magnetic ballasts are designed and manufactured to engineering standards correlating to an average life expectancy of 50000 hr of operation at maximum rated case temperatureBlue label color coding20 to 24 dB average ambient noise level of interiorHigh power factorSound rated AProgrammed start parallel lamp connection35I - ballast individual packagedProvides task appropriate comfort only where necessary to increase potential energy savings while supporting LEED performance standardsFull range continuous dimming (100% light output down to 3% - T5HO to 1%)Help reduce maintenance costs as more lamps remain on when lamps reach end of life minimizing wasteful re-lampingIndependent light operation (4-lamp)0 to 10 VDC electronic dimming ballasts provide maximum versatility with low voltage dimmingAutomatic restart1.6 nominal crest factor1.5 s nominal ignition time18 AWG solid wire