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Step 3.Rrotate the
rotary buttons by 180 degree by screwdriver,when
the red point adjoin to the symbol, it is part of
the code, when the red point adjoin to "NO",
it is not part of the code |
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Step 4.rotate the
button "F" by 90 degree, turn back to
become ,the color in the observing hole turn to
red, now the code has been confirmed. |
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