Features: 1. Multi-function: it can detect temperature and humidity, CO2 you can view the data you need. 2. Portability: This product is small in size and light in weight, which is very convenient to carry around. 3. Function: with intelligent alarm system, ga-s recognition algorithm, multiple anti-interference, air convection technology and greenhouse compensation calibration. 4. Accuracy: The high-performance chip can accurately capture the weak current generated during the electrochemical reaction and accurately calculate the measurement result. 5. Stability: The carbon dioxide detection can be refreshed once per second, and the measurement can be performed quickly and relatively stable measurement values can be obtained. This product is used in agricultural planting, greenhouse vegetables, production warehouses, radium material processing, etc. Specifications: Material: ABS Colour: Black CO2 detection range: 400-5000 PPM CO2 detection sensitivity: 1PPM Temperature measurement range: -10-70 Temperature elimination accuracy: 1 Humidity measurement range: 0%-99%RH Humidity measurement accuracy: 2%RH Charging modes: DC5V 500mA micro USB interface Battery: 1 * Lithium battery 2000mAh Product size: 96*33*33mm Package Included: 1 pc * Air quality detector 1 pc * USB cable 1 pc * User manual Notes: 1. Please allow 0-1 inch error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from real object.