Wered by rechargable lithium battery, the air quality monitor makes it easy to take measurements from one room to another in order to get an overview of the air quality in a home, workplace, school, a daycare centre or any other location. The air quality monitor is also an essential tool to use when performing property inspections or when using any household tools to see if there is any abnormal amount of release. Intelligent detection of types of gas. Most household gas can be detected, no need to worry about the applicability. The measurement is displayed on a high definition screen, small and light design for easy carrying. Natural air flow detection technology is adopted to determine air quality problems more accurately. Built-in polymer battery, energy saving and environmental protection, long standby time. Widely be used , office, enterprise, government, school and car, etc. Detect and monitor air problems at any time to the health of family members or employees. Colour: black Material: plastic Size: 118x70x34MM Package Contents: 1 * Air Quality Tester 1 * USB Cable Only the above package content, other products are not included. Note: Light 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.