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 . Functions: ultraviolet level detection, early warning of pro-tection level, detection of ultraviolet radiation dose, outdoor sunlight detection, indoor 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. 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 -: 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: -sor technology application Item size: 127 x 54 x 18mm / 5.0 x 2.1 x 0.7inch Item weight: 96g / 3.4ounce color:Black Material:Plastic Package Contents: 1 x Ultraviolet Radiation Detector Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.