... four configuration for choice: A) IC Standard with chip, PF≥0.99, THD<15%, life time is 30,000h, 110V/120V ... 60Hz,pre-heating and EOL function B) TUV Standard, PF≥0.97, THD<15%, life time is 20,000h, 220-240V ... ,50Hz C) Ordinary Standard, PF≥0.95, THD<30%, life tim is 15,000h,220-240V ... energy conservation improvement and so on T5 wall lamp fixtures built in EB 6w/8w/13w/14w/21w/28w/35w