Date
Aug 20, 2025 2:31 PM
- Please ensure a stable power supply voltage and current. We have found that some PM25-1 devices on HUBs may cause insufficient rotation speed and particle counts to rise above 1000. Using a stable direct USB power supply will improve this to a reasonable level.
- In the latest firmware, we have added a fan cleaning function. This function should only be executed when necessary. After clicking to execute, the fan will spin rapidly, and you may hear a louder fan noise when you get close.
- Additionally, the firmware will automatically clean the fan dust approximately once a week by default.