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7. Intensity Option: Press the “+”/”-” button on the
left/right side of the machine to adjust the intensi-
ty for the channel on which the icon is flashing.
NOTE 1: The intensity of the channel will revert to
the lowest setting with each mode selection.
NOTE 2: For initial use, the intensity should be
set between 1-3. If you feel the intensity is weak
in 1-2 minutes, gradually increase it and select
the most comfortable setting.