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Pocket Transmission Meter: It is the same size as a cigarette case and can be put in a pocket for easy carrying Transmittance + suppression rate: the measuring rate can simultaneously test the transmittance for visible light, UV suppression rate and IR suppression rate. There is no need to subtract the data by 100%. Quick measurement and reading: one button design, after power on, no operation is required, the test data will be displayed immediately when the test material is tested Date Lock Function: The data will be preserved after taking the test material by pressing the \; Product description IR peak wavelength: 160:940nm / 160A:1400nm UV peak wavelength: 365nm Visible light: 530nm Maximum sample thickness: 0.8 mm. Resolution: 0.1% Weight: approx. 70 g (without batteries). Power supply: 4 x AAA alkaline dry batteries Dimensions: 93 mm x 52 mm x 25 mm (L x W x H); Product description IR peak wavelength: 160:940nm / 160A:1400nm UV peak wavelength: 365nm Visible light: 530nm Maximum sample thickness: 0.8 mm. Resolution: 0.1% Weight: approx. 70 g (without batteries). Power supply: 4 x AAA alkaline dry batteries Dimensions: 93 mm x 52 mm x 25 mm (L x W x H); IR peak wavelength: 160:940nm / 160A:1400nm UV peak wavelength: 365nm Visible light: 530nm Maximum sample thickness: 0.8 mm. Resolution: 0.1% Weight: approx. 70 g (without batteries). Power supply: 4 x AAA alkaline dry batteries Dimensions: 93 mm x 52 mm x 25 mm (L x W x H)