Sylvania QTP2X40TT5/120 T5 Fluorescent Electronic Ballast Quicktronic 120V, FT40 T5, 2 Lamp PROStart Programmed Rapid Start Ballast QUICKSENSE ballast technology (end-of-lamp-life sensing) 0F (-18C) Starting Temp. High luminous efficacy Virtually eliminates lamp flicker Quiet operation High power factor Low harmonic distortion