1.UV Rejection meter, IR Rejection meter, Light Transmittance Meter, Three function in ONE device. 2.Self-calibration and auto-calibration, NO need any manual adjustments 3.Simple operation, putting the testing sample in the opening, UV Rejection, IR Rejection, Visible light transmission value of the sample will simultaneously display. LS101 Solar Film Transmission Meter is to simultaneously measure and display UV, IR rejection value and visible light transmission value. This meter is self-contained light sources and self-calibration. No manual adjustment is needed. The users only need plug the power supply, turn on the switch and put the solar film in the opening. The resulting performance data appear on the display. Dimension: 175mm X 120mm X 30mm(L*W*H) Testing opening: Wide 20mm * Height 70 mm Resolution: 0.1% Accuracy: +/-2%(Colorless and transparent material) UV wavelength: 365nm Visible light wavelength: 380nm-760nm IR wavelength: 940nm Power supply: 4XAA batteries (not included) Colour:Photo Color Material:ABS Package Contents: 1X Solar Film Tester Meter 1X English Manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.