... ≤10%, Life = 30,000 hours, TUV CE,CB,GS,ENEC,UL Certified;TUV Standard Ballast, PF≥0.98, THD≤15%, Life = 20 ... ,000 hours, TUV CE Certified;Normal High Standard Ballast, PF≥0.95, THD≤30%, Life ... *53*28[1] The fixture working under temperature of 50°C cannot go over five hours for safety issues. Lamps Lighting ...