Usage Tips:9-in-1 air quality detector monitors CO2 concentration, CO concentration, TVOC value, HCHO value, PM2.5 or PM1.0 or PM10 value, temperature and relative humidity in real time with stable performance and high detection accuracy. Large-screen LCD digital display, support alarm function, perfect for home, office, school, warehouse, agricultural planting, etc. Features: 9 in 1: Multifunctional air quality detector real-time monitoring of CO2 concentration, CO concentration, TVOC value, HCHO value, PM2.5 or PM1.0 or PM10 value, temperature and relative humidity in the air. Clear Display: Large digital screen with backlight, clear and easy to read, support alarm function. Multiple display modes are available, you can switch according to your needs. High Accuracy: Using air semiconductor sensor, infrared PM2.5 sensor and electrochemical sensor, plus high-performance chip, detection is more accurate, higher accuracy, and the accuracy can reach 1PPM. Built-in Battery: Equipped with 2000mAh high-capacity rechargeable battery, low power consumption and long endurance, no need to replace the battery frequently. Quick Heat Dissipation: With multiple ventilation holes, which accelerate the convection between the air and the detector, to achieve effective detection and provide a nice heat dissipation effect. Wide Application: Lightweight and portable, it is suitable for home, office, school, warehouse, 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, ±50±15 percent PPM CO2 Detection Accuracy: 1PPM CO Detection Ranges: 0-500PPM CO Detection Accuracy: 1PPM TVOC Detection Ranges: 0-2.0mg or m3 HCHO Detection Ranges: 0-0.6mg or m3 PM2.5 Detection Ranges: 0-1000ug or m3 PM2.5 Detection Accuracy: 1ug or m3 PM1.0 Detection Ranges: 0-1000ug or m3 PM10 Detection Ranges: 0-1000ug or m3 Temperature Detection Ranges: -10-50℃, ±2℃ Humidity Detection Ranges: 0-99 percent RH, ±3 percent RH Input Voltage: 5V, 1A Battery: Built-in 3.7V, 2000mAh Lithium Battery Working Current: 260mA Power: 1W Item Size: 89 x 82 x 36mm or 3.5 x 3.2 x 1.4in Item Weight: 160g or 5.6oz Package Size: 141 x 98 x 48mm or 5.6 x 3.9 x 1.9in Package Weight: 240g or 8.5oz Packing List: 1 x Air Quality Monitor 1 x USB Cable 1 x Manual Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.