... lampholder4, Electronic ballast--four configuration for choice: A) IC Standard with chip, PF≥0.99, THD<15%, life time ... 240V.50/60Hz,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,50Hz D) Low Standard, PF≥0.55, life time is 15,000h, 110V/ ...