This automatic touchless soap dispenser has a precise trigger area that can sense your hands quickly, just place your hand under the sensor to get the dispenser to work. It pumps soap liquid of only 1 ml at a time. If you need more, hold your hands under the sensor and wait another 2 seconds, it pump again. The soap dispenser requires 4 pieces of AAA batteries. When installing them, please check the "+" and "-" symbols of the battery and soap dispenser to install correctly. the bottom button. You see the indicator flash. Now the device can work normally. This soap dispenser can hold 300ML liquid soap, the visible scale of soap can tell you when to add soap liquid. The bathroom dish soap dispenser can be used in the kitchen, bathroom, hotel, hospital, no wall-mounted installation. Anti-skid Bottom. This hands-free soap dispenser is IP67 waterproof so that the entire machine can be washed by water. Anti-skid design at the bottom, strong sealing. The rubber material on the soap dispenser bottom prevent soap leakage, and keep the dispenser not be sliding around your countertop. Color as shown Material: ABS Package Contents: 2 x Soap Dispenser Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.