... 2.Operating voltage:220V 3. CE/Rohs approval 4.life span:12,000 hs 5.energy saving up to 50%,Rapid ... flickering, even under low temperature or low voltage.6. CRI>80, get better color performance.7. Hi frequency electronic ballast, ... few secondsinstantElectricity consumption0.037 kilowatt/hr0.021 kilowatt /hrElectricity savingComparing with 30WT8, 21WT5 will save electricity by 43% 14WT5 integrative ...