Monitor the air quality anywhere built-in chargeable battery can provide 8hours power. [Smart LED Color Screen] Air quality tester equipped with a high-definition color screen for real-time data display, making it clear and easy to read. It provides an overall assessment of environmental quality and tracks the average value of each gas, helping you quickly identify unsafe gases in the air. In alarm mode, the screen changes color to remind you to pay attention to the environment. [Multi-Function Air Quality Monitor] This is a indoor air quality monitor that accurately detects carbon dioxide (CO2)temperature, and humidity in real time. It helps you stay informed about the air quality in your living environment at a glance. Hear the air quality You may adjust the different value of CO2 to set the sound alarm and notification in APP., Manufacturer: Akfldms