Ballast, Electronic, Fluorescent, 120/277V Input

Four long-life, high-output LEDs;LEDs will continue to operate even if 1 or 2 should fail;Neutral white, 4000K LEDs;Design optimized wide area illumination patterns;No heads to aim, no adjustments to make;Sturdy die-cast aluminum construction;Standard electrical box and conduit entry provisions;90-minute emergency operation from external 6 through 12VDC source;Fast, easy installation;U.S. Patent No. D627,916;Low power consumption;Up to 24 watt output;UL Damp Location Listed;Temperature Range