Introducing the Portable Air Quality Detector This high-quality air quality detector is designed for ease of use and portability. With its compact size and lightweight design, it is perfect for on-the-go monitoring. Key Features: Compact & Portable: Easy to carry and transport wherever required. High Accuracy Sensors: Equipped with semiconductor sensors to accurately detect carbon dioxide levels. Advanced Detection: Uses electrochemical detection for stable performance and long service life. Includes air convection and infrared technology for precise results. Large LCD Display: Clearly shows battery level, CO2, TVOC, HCHO, temperature, and humidity. Display backlight for easy reading. Convenience: ℃ and ℉ switchable settings with real-time data refresh. No calibration needed—just switch on and use. Efficient Ventilation: Numerous ventilation holes speed up air exchange, enhancing detection efficiency. Wide Applications: Ideal for agricultural planting, greenhouse vegetable management, warehouses, material processing, home interiors, business offices, and more. Specifications: Material: ABS Battery: 1 x built-in lithium battery, 3.7V, 1200mAh (included) Display: LCD with backlight CO2 Measuring Range: 400ppm-5000ppm HCHO Measuring Range: 0-0.6mg/m³ TVOC Measuring Range: 0-2.0mg/m³ Temperature Range: 0℃ to 50℃ Temperature Accuracy: ±1℃ Humidity Range: 0%RH-99%RH Humidity Accuracy: ±5%RH Operating Temperature: 0-70℃ Operating Humidity: 20%RH-90%RH Item Dimensions: 70 x 90 x 35mm / 2.76 x 3.54 x 1.38in Item Weight: 120g / 4.23oz Package Dimensions: 140 x 124 x 41mm / 5.51 x 4.88 x 1.61in Package Weight: 180g / 6.35oz Packing List: 1 x Air Quality Detector 1 x Charging Cable 1 x User Guideline