Use: 1. Put the hand near the inductive zone and the liquid will flow out from the outlet. Please run several times until the liquid flow out of the dispenser duringthe first time use, because the soap liquid havenï¾t flow into the liquid pipe. 2. If necessary please move your hand and repeat the step 1. 3. The volume is adjustable, totally four levels. Use ï¾+ï¾ button to add the volume, use ï¾-ï¾ button to reduce the volume.