How to use?
<1> Insert 2x UM-4 brand new Alkaline batteries.
<2> Switch ON the unit.
<3> All segments on with a "BEEP" sounded.
<4> Then the unit will calibrate itself automatically.
<5> Simply place the unit sensor area on your skin testing area, a "CLICK" felt.
<6> Then, you can take off the unit & read the moisture index from the LCD accordingly.