m) Set frequency limit
Input the passwords first. Press "UP" and "DOWN" button to adjust the first value. Then
press "ENTER" to adjust second value. After setting all the values, press the "ENTER"
key to finish the setting.
n) Mppt Scan
Press "UP" and "DOWN" button to adjust the first value. Then press "ENTER" to adjust
second value. Finally press the "ENTER" key to finish the setting.
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