... frequency:50Hz/60HZ 4. using pure triphosfor, ensure Luminous Efficiency>80lm/w 5. Power: 18W-300W 6. ... 2.Energy saving,high lighting effiency and stable luminous flux 3.Whole color temp. rendering from 2100K-6500K ... ,color rending index:CRI>80Ra,luminous efficiency>80ml/w,high power factor:0.99 ... Working normally in wide voltage fluctuation 6.EMC test fulfill CE,CCC 7.Instant start up at ...