Product Name: Solar Film Tester This portable instrument measures visible light transmittance and infrared rejection of automotive solar film plastics, architectural films, and transparent or translucent materials. Crafted using components based on optical principles, this instrument offers simple operation, accurate measurements, and a compact, portable design, making it particularly suitable for on-site measurements. Applications: It is primarily used to test the transmittance of solar film and its infrared transmittance in the 900-1000nm band. While transmittance measurements are generally accurate, infrared transmittance only measures a portion of the sunlight wavelength range and should only be used as a reference. Instrument Features: 1. Compact and design for easy portability 2. Fully intelligent design for simple operation 3. Accurate measurements with excellent repeatability 4. LED Digital Display How to Read: The first line measures light transmittance. The measured value represents the light transmittance. The second line shows infrared rejection, also known as thermal insulation. Subtract the test value from 100 to get the value. The tester measures both visible light transmittance and infrared rejection. The top line shows visible light transmittance. The bottom line shows infrared rejection, also known as thermal insulation. Subtract the test value from 100 to get the value. Color: As Shown Material: ABS Package Contents: 1 * Solar Film Tester Meter 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 picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.