1. The 123 UV power meter is suitable for testing the ultraviolet rejection performance of explosion-proof films, automotive insulation films, solar films and insulating s. 2. It can be used to measure the radiation intensity (ultraviolet power density) of ultraviolet light sources (sunlight, ultraviolet flashlight, etc.). 3. The ultraviolet power meter has a fast measurement speed which can automatically convert the ultraviolet rejection rate of the material. The rejection rate will be displayed on the interface directly for easy reading. 4. The UV lamp intensity meter has wide spectral response which can test the ultraviolet intensity from 260nm-380nm wavelength. 5. The detector is located at the front of the instrument and is easy to use.