This is a high-quality air quality detector, utilizing a superior electrochemical detection module for high accuracy and stable performance. It accurately detects carbon dioxide levels. The large screen design provides clear measurement data. Different colors indicate varying air quality levels. Give it a try! Features: This intelligent carbon dioxide meter uses an air semiconductor sensor to monitor temperature and humidity for air quality assessment. It employs a superior electrochemical detection module, ensuring high accuracy and stable performance for precise carbon dioxide detection. Strong anti-interference capability, low consumption, and long service life. The product requires no calibration; it's ready to test upon startup and accurately detects carbon dioxide. Different colors correspond to different air quality levels, making it suitable for offices, homes, and other occasions. Hundreds of ventilation holes on the back of the housing not only accelerate convection between the air and the machine for efficient detection but also provide excellent heat dissipation. Wide applications: agricultural cultivation, greenhouse vegetables, production warehouses, material processing, home interiors, etc. 5-in-1: The large screen displays power, CO2 value, TVOC value, HCHO value, temperature, and humidity. Note: The new machine needs to be ventilated for 24 hours to ensure accurate measurement, and then the product will function normally.