This is a small, accurate and portable ultravioletradiation tester with a wide ran-ge of applications. It can detect ultraviolet radiation in real time, leaving the radiation nowhere to hide. Features: Compact and lightweight, easy to use and carry. LCD digital display screen, you can read the measure data clearly. There is a bracket on the back for easy placement. It is a multifunctional household daily use and travel essential goods. Functions: ultravioletlevel detection, early warning of protecting level, detection of ultraviolet radiation dose, outdoor sunlight detection, indoor lamps and other inspection. Suitable for the detection of ultraviolet (ultraviolet) radiation in sunlight, indoor lighting, ultraviolet l-amps and other equipment. This ultraviolet (ultraviolet) radiation detector can also be used to test and verify the protecting effects of anti-ultraviolet products in life, such as automobile films, curtains, protective clothing, glasses, protective articles, etc. Two power su-pply methods: you can use USB interface or battery (not included) to su-pply power. Specifications: Material: ABS Color: black Display window: 2.2 inches Working voltage: 5V Band: 350~380nano Power: 2 * AAA battery (not included) Detection error: less than 15% Sampling speed: less than 3 seconds Detection ran-ge: 0-22 0-3000uw / c-m Standby time: 2-3 hours Display type: digital display Display principle: LCD display Detection principle: lighting analysis and detection Application technology: sen-sor technology application Item size: 127 * 54 * 18mm / 5.0 * 2.1 * 0.7in Item weight: 96g / 3.4ounce Package size: 145 * 58 * 24mm / 5.7 * 2.3 * 0.9in Package weight: 81g / 2.9ounce Packing List: 1 * Ultraviolet Radiation Detector 1 * User Manual