... and color temperature ect for the led lamp. Lumen and color temperature(CCT) tester for LED CFL products, with patent, ... accuracy .Specifications: Characteristics:High quality integrating spheres for LED and LED lamps only, nice streamlined shape design,high diffuse reflection ... with different converter for E27, E14, B15, B22, GU10, G9.Could test different lamps with different bases.Input voltage ...