Features:Compact in size, lightweight and portable, easy to take out and carry around with you.Uses high accuracy semiconductor sensors, with stable working performance, can accurately detect carbon dioxide value.Adopts electrochemical detection module with stable detection performance, anti-jamming ability, low consumption and can provides long service time.Large LCD display with backlight, you can see the electricity quantity, CO2 value, TVOC value, HCHO value, temperature, and humidity clearly. and switchable, real-time detection, automatic refresh data, with multi-use.Adopts air convection and infrared detection technology, which can provides more accurate detection results.The product does not need calibration, it can be tested after booting, and it can accurately detect carbon dioxide.Hundreds of ventilation holes reserved on the housing not only accelerate the convection between the air and the machine, thereby realizing effective detection, but also provide a fine heat dissipation effect.Widely applications: agricultural planting, greenhouse vegetables, production warehouse, material processing, home interior, business offices, and etc..Specifications:Name: Air Quality Detector Material: ABSBattery: 1 * built-in lithium battery, 3.7V, 1200mAh (included)Display: LCD display with backlightCO2 measuring ranges: 400ppm-5000ppmHCHO measuring ranges: 0-0.6mg/mTVOC measuring ranges: 0-2.0mg/mTemperature measurement ranges: 0 to 50Accuracy: 1Humidity measurement ranges: 0%RH-99%RHAccuracy: 5%RHWorking temperature: 0-70Working humidity: 20%RH-90%RHItem size: 70 * 90 * 35mm / 2.76 * 3.54 * 1.38inItem weight: 120g / 4.23ouncePackage size: 140 * 124 * 41mm / 5.51 * 4.88 * 1.61inPackage weight: 180g / 6.35ouncePacking List:1 * Air Quality Detector1 * Cable1 * Guideline