enter the pairing state after the firsttime opening, and you can view the specific data on the APP after completing the connection. (Because it takes time to upload data, it is normal for the APP data to deviate from the real-time data of the detector.) AQI Air Quality Level Indication Function: Equipped with air quality level division function, use different color to show the different quality of the air being monitored, allowing you to more accurately and more visual know the current air conditions. Strong Heat Dissipation: Hundreds of ventilation holes reserved on the housing not only accelerate the convection between the air and the machine, thereby realizing effective detection, but also provide a fine heat dissipation effect. Wide Applications: Real-time detection, automatic refresh data, with multi-use. Suitable for agricultural planting, greenhouse vegetables, production warehouse, material processing, home interior, business offices, and etc. Specifications: Material: ABS Color: white, black (optional) Version: Wifi version, common version (optional) Battery: 1 * 2000mAh lithium battery (included) Display: TFT color display Sensor: semiconductor TVOC sensor, electrochemical CO sensor, infrared PM2.5 sensor, temperature and humidity sensor HCHO measurement ranges: 0-9.999mg/m TVOC measurement ranges: 0-9.999mg/m PM2.5/PM10 measurement ranges: 0-999g/m CO: 0-1000PPM CO2 measurement ranges: 0-5000PPM Temperature measurement ranges: 0-70 Humidity measurement ranges: 0-99%RH AQI: 0-500 Recharging method: USB Type-C interface, 5V 2A Item size: 70 * 90 * 35mm / 2.76 * 3.54 * 1.38in Package size: 145 * 104 * 48mm / 5.71 * 4.09 * 1.89in Package weight: 200g / 7.05ounce Packing List: 1 * Air Quality Monitor 1 * Type-C Cable 1 * Guideline