... ballast, digital ballast, electronic ballast Specifications: 1) Input Voltage Range: 100Vac~268Vac 2) Input frequency: 50/60Hz 3) Power factor: >0.99 4) ... Efficiency: 95 %( Max) 5) THD: <10% 6) Current crest factor: <1.5 7) Max. Lamp distance from ballast: 15m ... ) Trouble-detecting protection function 3) Dimming, adjustable output power 4) Light weight, small size, non-flickering, noiseless 5) ...