Make sure your thumb is touching the ground plate for proper ground. Change sensitivity depending on skin condition – dry for dry skin and wet for wet skin. With Dolphin classic (black) point sensitivity is a DIAL located below polarity switch. On Dolphin Professional (white) point sensitivity is a 3-position slider located beside the ground plate.

Note: When treating another person, make sure to ground to them by making skin contact (or use the dual wrist strap).