Ms 7826 Ver 1.0 Manual | Extended |

The manual instructs:

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A: Hold the small reset button (inside the front flap) for 15 seconds while powering up. All registers return to default values (AO0–AO3 = 0, baud=9600, address=1). ms 7826 ver 1.0 manual

If this is a software/firmware update (Ver 1.0): The manual instructs:

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