1.Solar Energy Tester 2.UV Tester 3.the center of tester can change color according to sun radiation 4.logo can be made 5.CE UV tester Product Specification: sun tester that can check sun radiation low,mid,high or highest level.The center area of the sun tester can change colors according to sun radiation, higher the sun radiation, deeper the color change, compare the color change to the 4 ...