This 9-in-1 air quality detector monitors CO2 concentration, CO concentration, TVOC value, HCHO value, PM2.5/PM1.0/PM10 value, temperature, and relative humidity in real-time with stable performance and high detection accuracy. Featuring a large LCD digital display and alarm function, it's perfect for homes, offices, schools, warehouses, agricultural planting, etc. Features: 9 in 1: Multifunctional air quality detector that monitors CO2 concentration, CO concentration, TVOC value, HCHO value, PM2.5/PM1.0/PM10 value, temperature, and relative humidity in the air in real-time. Clear Display: Large digital screen with backlight, clear and easy to read, supports alarm function. Multiple display modes are available, you can switch according to your needs. High Accuracy: Uses air semiconductor sensor, infrared PM2.5 sensor, and electrochemical sensor, plus a high-performance chip, the detection is more accurate, higher precision, and the accuracy can reach 1PPM. Built-in Battery: Equipped with a 2000mAh high-capacity rechargeable battery, low power consumption and long endurance, you don't need to change the battery frequently. Fast Heat Dissipation: With multiple ventilation holes, which accelerates the convection between the air and the detector, to achieve effective detection and provide a good heat dissipation effect. Wide Application: Lightweight and portable, it is suitable for homes, offices, schools, warehouses, agricultural planting, etc. No need to calibrate at startup, automatic monitoring. Specifications: Color: White Material: ABS Display: 2.8 inch TFT screen CO2 Detection Ranges: 400-6000PPM, 5015%PPM CO2 Detection Accuracy: 1PPM CO Detection Ranges: 0-500PPM CO Detection Accuracy: 1PPM TVOC Detection Ranges: 0-2.0mg/m3 HCHO Detection Ranges: 0-0.6mg/m3 PM2.5 Detection Ranges: 0-1000ug/m3 PM2.5 Detection Accuracy: 1ug/m3 PM1.0 Detection Ranges: 0-1000ug/m3 PM10 Detection Ranges: 0-1000ug/m3 Temperature Detection Ranges: -10-50, 2 Humidity Detection Ranges: 0-99%RH, 3%RH Input Voltage: 5V, 1A Battery: Built-in 3.7V, 2000mAh Lithium Battery Working Current: 260mA Power: 1W Item Size: 89 * 82 * 36mm/ 3.5 * 3.2 * 1.4in Item Weight: 160g/ 5.6oz Package Size: 141 * 98 * 48mm/ 5.6 * 3.9 * 1.9in Package Weight: 240g/ 8.5oz Packing List: 1 * Air Quality Meter 1 * USB Cable 1 * Manual