General description This 5-in-1 air quality monitor is designed to provide accurate real-time measurements of carbon dioxide (CO2), HCHO, TVOC, temperature, and humidity, ensuring a clean and healthy indoor environment. The device features a clear LED display that shows data in an easily readable format, along with an alarm system that alerts users when CO2 levels exceed safe limits. Technical specifications Dimensions: 9×7×3.5 cm Battery: 1200mAh rechargeable lithium-ion Charging: 5V USB cable included Usage The air quality monitor is operated with a convenient one-button system, allowing users to easily turn the device on or off and observe various air quality data. The built-in 4-color LED lights indicate air quality levels, making it simple to identify whether the air is healthy or unhealthy. Other information The monitor features a multi-mesh design with openings on all four sides to enhance air circulation and improve measurement accuracy. This design also helps prevent