1. Portability: The Carbon Dioxide Detector is compact and small, making it 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 action 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 switched on. With an intuitive interface and simple button controls, this air quality monitor is easy to use and read. 5. Multi-application: The air quality tester is excellent for monitoring airborne pollutants and is widely used in educational institutions, agricultural farming, greenhouse farming, warehouse operations, and material processing. 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 Monitor Meter Note: Light reflection and different displays may cause the color of the item in the picture to be slightly different from the real thing. The measurement allowed error is +/- 1-3cm.