Description Large LCD display, electricity, CO2 value, TVOC value, HCHO value, temperature and humidity are clear at a glance. , can be switched, detection performance is stable , the anti-interference ability is strong, the power consumption is low, and the service life is long. Equipped with air quality classification function, four different colors correspond at different levels of air quality, allowing you to understand the current atmospheric conditions more accurately and vividly. Hundreds of external ventilation holes not only accelerate the convection between the air and machine for effective detection, but also ensure good heat dissipation. Widely used: agricultural planting, greenhouse vegetables, production warehouse, material processing, home interior, office business, etc. Feature: Material au: ABS Battery: 1 built-in lithium battery, 3.7V, 1200mAh (included) CO2 measurement range: 400ppm-6000ppm Product size: 90*70*35mm/3.54*2.76*1.38in Item weight: 100g / 3.53oz Large LCD screen, electricity , CO2 value, TVOC value, HCHO value, temperature and humidity are clear at a glance. Packing List: 1 * Air Quality Detector 1 * guide Widely used: agricultural planting, greenhouse vegetables, production warehouse, material processing, home interior, business office, etc. Be careful: 1. Product error range: 10-60PPM 2. Please use Type-C interface, 5V/1A power cord to charge 3. After the product is turned on, it should be left for 4 hours to make the measured value more accurate. 4. If the measured value of the product is found to be inaccurate, the distance of the product and the direction of the detection hole can be adjusted appropriately. Because the closer the product is to the gas source, the more accurate the measurement will be.