GE 23954 GE259MAX-N-DIY 120/277-volt UltraMax Electronic Linear Fluorescent T8 Multi-volt Instant Start Ballast, 2 or 1 F96T8 lamps. Multi-volt Instant Start Linear Fluorescent T8 Ballast will accept up to 2 or 1 F96T8 lamps. Accommodates multi-voltages from 120 to 277-volts, extra versatile for your unique projects. Active current regulation independently controls current output to each lamp, ensuring lamp life is not reduced should another lamp fail in the circuit. Anti-striation circuitry helps to eliminate and prevent the spiraling effect from lights. Mounting dimensions: 8.9-Inch L x 1.1-Inch W, Mounting slot set 0.3-Inch apart. UltraMax ballasts have a lamp-friendly low-lamp-current crest factor and virtually "read" and adapt to incoming voltage. Parallel lamp operation keeps the unit maintenance easier to manage, if one lamp fails others will stay on. Unit is thermally protected and features an auto-restart function. T8 ballast sound rating: Class A (20-24 decibels). Ballast factor rating of Normal .87 for full light output, ballast factor rating controls light output and wattages of each lamp, a lower BF will reduce light output and wattage of each lamp, meaning more lamps would be needed to achieve a certain foot-candle level in the same area. Runs quietly with most 120-volt applications, less than 10-Percent Total Harmonic Distortion (THD). less than 20-Percent with other approved lamps. UL Type 1 Outdoor, UL Type CC, UL Type HL, and UL Class P listed , CUL Listed, ROHS Compliant - Industry standards for safety and performance.