Solar Energy tester that can check sun radiation low,mid,high or highest level.

The center area of the solar energy tester can change colors according to sun radiation, higher the sun radiation, deeper the color change, compare the color change to the 4 standard colors(low, mid, high, highest) around and you can see low, mid, high or highest level of solar energy or sun radiation.

This product is very good marketing premium for solar energy equipment industry.You can use it to check sun energy and sun radiation to decide if you can use the solar energy equipment and make sure you can use solar energy equipment in proper way as sun radiation changing.