It is a kind of air quality detector, compact in size, lightweight and portable. Adopts most high-precision TVOC sensors, real-time detection, automatic refresh data, with multi-use. Large LCD screen, you can clearly see the electricity quantity, CO2 value, TVOC value, HCHO value, temperature and humidity. Widely applications: agricultural planting, greenhouse vegetables, production warehouse, material processing, home interior, business offices, etc. Features:< br/> Compact in size, lightweight and portable, easy to take and carry with you. Adopts most high-precision TVOC sensors, real-time detection, automatic refresh data, with multi-use . Large LCD display, you can clearly see the electricity quantity, CO2 value, TVOC value, HCHO value, temperature and humidity. and switchable, with performance of stable detection, anti-jamming ability, low consumption and long service time. Equipped with air quality level division function, four different colors correspond to different air quality levels , allowing you to know the current atmospheric conditions more precisely and graphically. Hundreds of air vents on the exterior, not only accelerate the convection between the air and the machine to achieve effective detection , but also provide fine heat radiation effect. Widely applications: agricultural planting, greenhouse vegetables, production warehouse, material processing, home interior, business offices, etc. > Features: Name: Air quality detector Material: ABS Battery?: 1 * built-in lithium battery, 3.7V, 1200mAh (included) CO2 measuring ranges: 400?ppm-6000?ppm Item size: 90*70*35mm/3.54*2.76*1.38in Item Weight?: 100g / 3.53oz Package size: 145 * 125 * 45mm / 5.71 * 4.92 * 1.77inch Package Weight: 200g/7.05oz Packing List: 1 * Air Quality Detector 1 * Guideline