The air quality data detected by the Xiaomi Smart Air Purifier 4 Pro is not accurate

The Xiaomi Smart Air Purifier 4 Pro comes with built-in sensors that continuously monitor indoor air quality, detecting pollutants and displaying real-time data on the device's display panel or through a companion mobile app.
If the air quality data is not accurate, please refer to the following steps to troubleshoot the issue:
1. Ensure that the laser particle sensor in the air purifier is clean. Dust or debris buildup on the sensor may affect its accuracy. Open the cover of the laser particle sensor compartment and clean the compartment;
2. Factors such as water mist and oil fumes produced by indoor use of humidifiers, smoking, cooking, etc. will also affect the purifier's detection of air quality values;
3. If the filter is overdue for replacement, it can impact the purifier’s ability to provide accurate air quality readings. Check the filter life in the Mi Home app or the display on the purifier and replace the filter promptly;
4. Make sure the air purifier is placed in an appropriate location in the room. Please avoid placing it near air vents, doors, windows, or other sources of drafts that may affect its ability to accurately measure air quality;
5. As a last resort, reset the air purifier to its factory settings;
If the issue still remains unresolved, don't hesitate to reach out to either our local service center or seller for assistance. They'll be more than happy to help you out!