This is a small, accurate and portable ultraviolet radiation 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: ultraviolet level detection, early warning of pro-tection 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 pro-tection 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-m² 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