2. Remove the temperature & humidity& pressure sensor that needs to be replaced.
3. Replace it with a new temperature & humidity& pressure sensor. When inserting align the notch with the protrusion. Make sure that the sensor is tightly fastened in place.
4. Install the protection filter for the temperature & humidity& pressure sensor, and close the plastic cover.
5. Please upgrade the firmware to V1.4.8 and above to enable the new sensor.