High Accurate Sensors: Uses high-precise sensors with high sensitivity, superior interference resistance, stable performance and low power consumption. Digital Color Display: 3.8inch large digital color screen with brightness adjustment, clear and not dazzling. Features date, time display and dual alarm clock function. AQI Level Indication: Different colors indicate air quality levels, allowing visual and accurate understanding of current air conditions. Strong Heat Dissipation: Hundreds of ventilation holes accelerate air convection for effective detection and good heat dissipation. Wide Applications: Real-time detection with automatic data refresh, suitable for agricultural planting, greenhouse vegetables, production warehouse, material processing, home interior, business offices, etc. Specifications: Material: ABS Color: As shown Battery: 1 * 2500mAh lithium battery (included) Display: Digital color display Operating Voltage: 5V Sensors: PM2.5/semiconductor/electrochemical sensors Operating Temperature: 0-70℃ Humidity: 0-99%RH PM2.5: 0-999 ug/m3 PM10: 0-999 ug/m3 Formaldehyde (HCHO): 0-9.999 mg/m3 TVOC: 0-9.999 mg/m3 AQI: 0-500 Item Size: 112 * 78 * 35mm / 4.41 * 3.07 * 1.38in Item Weight: 200g / 7.05ounce Package Size: 135 * 115 * 43mm / 5.31 * 4.53 * 1.69in Package Weight: 320g / 11.29ounce Packing List: 1 * Air Quality Monitor