Power Voltage: 220V Power Frequency: 50-60HZ Electric current: 0.255A/0.15A/0.19A/0105A Power factor(PF): 0.98 Coeffcient: 0.95 Crest Factor: 1.7 Starting time: 0.4 EMC/EMI: 3C Lamp Type: T5, T8 Circular Life Expectancy(hrs):10000 EXT. Dimension:L*W*H(mm): 320*35*28 Specifications: T5, T8: 1 x 55W, 1 x 32W, 1 x 40W, 1 x 22W Features: 1.Optimized circuit matching design, no AC frequency twinkling and it could protect our eyesight effectually. 2.The appropriative socket for outfitting annular tube. 3.Moderated cubage, it's suitable for various of using in lamps.