The default password is '0000'
Display Panel - set the password
After turning on the panel, wait for about 20 seconds.
Long press the M button to see the menu.
Use the up and down buttons to select "password", and press
the M button.
Use up and down buttons to change the number for each digit.
Long press the M button to exit the password page.
Exit to the main page to save the new password.
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