t5 electronic ballast 54w 1.Power:14w,21w,28w,35w,54w 2.PF>98%,THD<10% 3.30000hrs, three ... with TUV t5 electronic ballast 54w electronic ballast Power: 14w,28w,35w,54w,2*14w,2*28w,2*35w,2*54w electronic ballast Features: 1.electronic ballast High Power Factor ... (PF>95%,THD<30%) 2.electronic balalst Low harmonic, ...