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 display, 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: Compact in size, lightweight and portable, easy to take and carry with you. Adopts most high-precision TVOC sensors, real-time detection, auto-refresh data, with multi -usage. Large LCD display, you can clearly see the amount of electricity, CO2 value, TVOC value, HCHO value, temperature and humidity. and switchable, with stable detection performance, anti-jamming ability, low power consumption and long service life. Equipped with air quality level dividing function, four different colors correspond to different levels of air quality, letting you know the current atmospheric conditions more accurately and graphically. Hundreds of air vents on the exterior, no only accelerate convection between air and machine to achieve effective detection, but also provide fine heat radiation effect. Widely Applications: Agricultural Planting, Greenhouse Vegetables, Production Warehouse, Processing of materials, home interior, business offices, etc. Features: Name: Air Quality Detector< br/> Material: ABS Battery?: 1 * built-in lithium battery, 3.7?V, 1?200 mAh (included) CO2 measurement ranges? : 400?ppm-6000?ppm Item size: 90*70*35mm/3.54*2.76*1.38in Item weight: 100?g / 3 .53 ounces Package size: 145*125*45mm/5.71*4.92*1.77in Package weight: 200g/7.05 ounces Packing List: 1 * Air Quality Detector 1 * Guideline