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6.
Whole: The overall sensitivity setting, left and right keys to select the High or Low
sensitivity. Press Enter key to save and return to the previous menu.
7.
Frequency: According to the site requirements on the walk through metal detector
operating frequency required, use the left and right key to select the operating
frequency of automatic adjusting or manually adjust to set the working frequency
band. Press Enter key to enter the submenu. Press power key to return to the
previous menu.