Feature: 1. Infrared power meter is an infrared power measuring instrument, which is used for measuring the infrared radiation luminance. 2. Evaluating heat-insulating property of the tint of window, solar films, glass and other transparent materials. 3. Measuring optical power density of infrared ray, wavelength response (1000nm-1700nm), gives visual and reliable result. 4. Large LCD display screen, with data hold function, easy to view. 5. Easy operation, compact size and lightweight, easy to carry. 6. Suitable for infrared barrier properties of buildling/car insulation film and heat insulation glass, iradiation intensity of infrared light source (solar, infrared light etc.), thermal performance of solar energy equipment. Specification: Condition: Brand New Item Type: IR Power Meter Material: ABS Color: As shown in the picture Size: Approx.120x67x24mm / 4.7x2.6x0.9in Weight: Approx.188g/6.6oz Irradiance Measuring Range: 0 - 40000W/㎡ Accuracy: ± 10% IR Rejection Rate: -999 - 100% Spectral Range: 1000-1700 nm Detector Hole Diameter: Approx.10mm/0.39in Power Supply: 4 x AAA alkaline batteries(Not included) Operating Temperature: -20℃ - + 70℃ . Package List: 1 x IR Power Meter Note: 1. Please allow 1-2cm error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.