The SYLVANIA Quicktronic 49853 electronic fluorescent ballast features an instant start method for T8 bulbs at 120 to 277 volts. For use with 32-watt lamps, this electronic ballast boasts a high power factor of 97 percent, ensuring maximum efficiency. A temperature rating of 158 degrees Fahrenheit makes the ballast suitable for mounting in warehouses and manufacturing facilities where high heat may be an issue. The ballast itself is designed to operate two fluorescent lamps of 32 watts and supports a ballast factor of 0.88. Quicktronic ballasts come with a five-year warranty.