G2S A20 / G2S C20 Quick Operation Manual V1.0
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D. Press and turn the Knob to adjust an option.
E. Press the Knob to confirm your adjustment to the option.
F. The cursor switches among the options as you turn the Knob . Refer to steps C-E to adjust
other options. When the cursor is on the Home option, as shown in the figure below, press the
Knob to exit the Setup Interface.
After you finish adjusting device settings and return to the Main Interface, press the Knob to
start treatment.