... .Easy installing E.Best service offer Professional 8W T5 electronic ballast ------------SpecificationsT5 electronic ballastVoltage: 110V/220VPower type: 14w, 21w, 28w, ... , input current and voltage protection ,extended the life of the fluorescent lamp.3. Super energy saver, PF: >0.98, THD<20%. ... -quality in the whole production process. --------------- 1*28wt T5 electronic ballast for fluorescent lamp