1. Portability: The carbon dioxide detector is compact, small, and easy to carry. 2. Fast Detection: The CO2 meter is equipped with high-quality temperature and humidity sensors for fast and accurate air quality detection. The intuitive data display provides accurate and reliable air quality readings, allowing users to take informed actions to improve the health and safety of their indoor environment. 3. Multiple Functions: The air quality monitor detects a range of common air pollutants such as CO2, CO, HCHO, TVOC, PM1.0, PM2.5, PM10, and can also measure air temperature and humidity. 4. Easy to Use: The CO2 meter starts working automatically and detects air without calibration after being turned on. With an intuitive interface and simple button controls, this air quality monitor is easy to use and read. 5. Versatile Use: The air quality tester is excellent for monitoring airborne pollutants and is widely used for home use, educational institutions, agricultural cultivation, greenhouse cultivation, warehouse operations, material processing, etc. Specification: Gas Type: Multifunctional With LCD Screen or Not: Yes Model Number: Carbon Dioxide Detector Built-in Lithium Battery: 2000mAh Charging: 3-4 hours Continuous Use: 6-8 hours Working Voltage: 3.7V Current: 150mA Power: 0.6W Material: Plastic Color: White Package Contents: 1 x Air Quality Meter Above package content only, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to be a little different from the real thing. The allowed measurement error is +/- 1-3 cm.