Sylvania 120-Volt QT2X54120PHODIM 120-Volt Dimming Electronic Ballast for Two 54-Watt T5 High Output DL and Circline Lamp

Sylvania QUICKTRONIC PHO-DIM operates PENTRON HO, PENTRON HO Circline, and DULUX L T5 lamps over a wide (100% to 1%) dimming range. SYSTEM PHO-DIM provides nearly twice the light output (188%) of T8 systems, with the same number of lamps, allowing many new design options. 1 lamp fixtures can now be used in place of 2 lamp models. SYSTEM PHO-DIM is appropriate for lighting control for aesthetic reasons as well as lighting management for energy conservation through daylight harvesting or building automation.|100% to 1% dimming range|QUICKSENSE Ballast technology (end-of-lamp-life sensing)|PROStart programmed start ballast|High luminous efficacy