9-in-1 air quality detector monitors CO2 concentration, CO concentration, TVOC levels, formaldehyde (HCHO) levels, PM2.5/PM1.0/PM10 particulate matter, temperature, and relative humidity in real time with stable performance and high detection accuracy. Features a large-screen LCD digital display with backlight, clear visibility, and alarm functionality. Suitable for home, office, school, warehouse, and agricultural environments. Features: - 9-in-1 multifunctional air quality detector for real-time monitoring of CO2, CO, TVOC, HCHO, PM2.5, PM1.0, PM10, temperature, and relative humidity. - Clear digital display with backlight and multiple display modes for user convenience. - High-accuracy sensors including electrochemical (CO), NDIR (CO2), semiconductor (TVOC/HCHO), and laser scattering (PM) technologies. - Built-in 3.7V, 2000mAh rechargeable lithium battery for extended operation. - Ventilated housing design supports efficient airflow and thermal management. - Lightweight and portable; ready to use without calibration at startup. Specifications: Color: White Material: ABS Display: 2.8-inch TFT screen CO2 Detection Range: 400–6000 ppm CO2 Accuracy: ±50 ppm ±3% of reading CO Detection Range: 0–500 ppm CO Accuracy: ±5 ppm ±3% of reading TVOC Detection Range: 0–2.0 mg/m³ HCHO Detection Range: 0–0.6 mg/m³ PM2.5 Detection Range: 0–1000 µg/m³ PM2.5 Accuracy: ±10 µg/m³ or ±10% of reading PM1.0/PM10 Detection Range: 0–1000 µg/m³ Temperature Range: –10°C to 50°C Temperature Accuracy: ±2°C Humidity Range: 0–99% RH Humidity Accuracy: ±3% RH Input Voltage: 5V, 1A Battery: Built-in 3.7V, 2000mAh lithium battery Working Current: 260 mA Power Consumption: 1W Unit Dimensions: 89 × 82 × 36 mm (3.5 × 3.2 × 1.4 in) Unit Weight: 160 g (5.6 oz) Package Dimensions: 141 × 98 × 48 mm (5.6 × 3.9 × 1.9 in) Package Weight: 240 g (8.5 oz) Includes: 1 × Air Quality Monitor 1 × USB Charging Cable 1 × User Manual