Description Feature: 1. 5 in 1 Air Quality Tester: This air quality tester can accurately detect CO2, HCHO, TVOC, temperature, and humidity, helping you understand the overall environmental quality and detecting the average value of each gas. 2. Color Screen: This air quality detector adopts an intelligent color screen, which is easy to read and clearly displays real time data. Help you understand which gases in the air are unsafe and take corresponding measures. 3. Built in Battery: This air quality tester is powered by a lithium battery with a large capacity of 1500mAh, providing lasting endurance. Supports USB charging, fully charged in 3 hours, and you can use it for about 7 hours. 4. Applicable Places: This indoor air detector is suitable for home bedrooms, living rooms, kitchens, offices, cars, schools, hotels, restaurants, campsites, infant caring rooms, and other public places. 5. Portable Design: This air quality monitor is compact and portable, making it easy to use, store, and carry. Provide you with uninterrupted air quality monitoring, always taking care of your and family health. Specification: Item Type: Air Quality Detector Product Material: ABS Use: This 5 in 1 air quality tester can accurately detect real time levels of CO2, HCHO, TVOC, temperature, and humidity. It is necessary to understand the air quality in your living environment, which can help you easily assess indoor air quality. Battery: 1 x Lithium Battery (Built in) Battery Capacity: 1500mAh. Package List: 1 x Air Quality Detector 1 x USB Charging Cable 1 x User Manual