[11in1 Functionality]: Carbon monoxide detectors not only displays time and date, but also provides real-time data on , CO, PM2.5, PM10, humidity, temperature, TVOC, HCHO, and CO2. Color display bar under each data of the CO2 detector will change according to the carbon dioxide concentration, and will issue a warning to remind you when the value exceeds 1800ppm to the safety of your indoor environment. [High Precision Sensors]: Air quality monitor indoor is equipped with high-precision sensors to accurate test results with minimal deviation, giving you reliable air quality data so you can make informed decisions about ventilation and indoor air purification. The CO2 monitor enters the screen saver energy-saving mode after 30 minutes of operation. Press any key to end the screen saver. [LED Screen]: Our air quality monitor uses LED display, the numbers are large and clear, and the screen brightness can be adjusted at will, allowing you to easily read data under different lighting conditions. You only need to press the "+" or "-" button when the indoor air quality monitor is turned on to adjust the screen, providing visual comfort and convenience. [Versatile Application]: Suitable for environments, including homes, newly renovated houses, offices, hotels, hospitals, laboratories, factories, and can even be carried when traveling. Air quality meter is compact and portable, and can also be with a mobile power supply. Humidity monitors can help you monitor and alert when ventilation is needed to a healthy indoor environment. [Stylish Design]: Smart air quality monitor can not only be used as a device to detect indoor air quality, temperature, and humidity, but it can also double as a stylish desktop decoration. Please note: the physical slightly color difference or difference, does not affect the use, please do not mind, thank you! Material: plastic colour: White Package Contents: 1 x Air Quality Monitor Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.