electronic ballast 1,12/24V 35/55W life ... Warranty:18 months 4,ISO 9001:2008 ISO I7799 electronic ballast1.High luminous flux: 3,200lm-3,600lm ... start: reach 20% of objective luminous flux within 0.8 seconds while above 80% within 4 seconds ... :>83% 5.More constant switch times: >100,000 times 6.Color Temperatures: 3000K, 4300K, 5000K, 6000K, 7000K, 8000K ... 85±17V)8.Packing: 2sets/carton electronic ballast