Fine offset WH2810 - Restoring Lost Outdoor Sensor

Color Screen Multi-channel Weather Station User Manual
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Pressure is rising, weather
expected to improve
Pressure is unchanged
Pressure is falling,
weather expected
to worsen
4.8.5 Restoring Lost Outdoor Temperature and Humidity Sensor
If the signal is lost between the remote sensor (or transmitter) and the
display console (or the receiver), to resynchronize, while in normal mode,
Press and hold SET/CH and TEMP button for 5 seconds, to register the
outdoor transmitter.
Please wait several minutes for the remote sensor reports in. Do not touch
any buttons until synchronization is complete.
If the synchronization fails, reset the console by removing one battery from
the display console, wait 10 seconds, and reinsert the battery, as specified
in the console set up part.