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 air quality, letting you know the current atmospheric conditions more accurately and graphically. Hundreds of air vents on the exterior, not only accelerate the convection between 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 business, etc.