Our Digital Solar Measurement tools display your window or film's ability to block solar energy. 70% of your customers heating and cooling bills that are due to the window are from the sun's light rays and not from conduction which ARGON and KRYPTON are used for. Solar Meters directly demonstrate how the infrared or heat component part of the the sun's light rays directly affects your customers energy bill. Use them along with our Infrared Heat Lamp (HL1040) to educate your customers on the solar performance of your window.