Features: Stay aware of your air quality with high precisions CO2 Monitors, to provide real updates on carbon dioxide levels for a healthier living environment. Equipped with highly sensitive Sensors, this Air Quality Detectors accurately measure key indicators such as CO2 concentration, ensuring precise monitoring both indoors and outdoors. for homeowners concerned about indoor air quality, school administrators, office managers, environmental professional, and technical engineers who prioritize health and safety. for use in residential setting, educational institutions, office, commercial buildings, hotel, hospitals, factories, laboratories, and storage facilities to maintain air quality. Experience with user friendly CO2 Monitors, featuring Intuitives Interfaces that simplifies operation, making it accessible to both Personals and professional users to enhances their environment. Specifications: Materials: Plastic Size: 9x7x3.5 Package Includes: 1PC Air Quality Meter note: Please allow 0-1cm error due to manual measurement. make sure you not mind before bid. Due to the differences between different monitors, the picture may not reflect the actual of the item.