Sensor Automatic Soap Dispenser: Touchless operation for easy use. Just place your hand under the sensor to start the soap dispenser, without touching the dispenser, you can effectively avoidcross infections, providing an excellent hand hygiene solution for adults and children anywhere. Adjustable capacity: the soap dispenser has a capacity of 240 ml. The adjustable soap volume controls the liquid volume from 0.5ml to 3ml by adjusting the knob on the top of the dispenser. No drips or smudges, no wastedsoap. Suitable for Almost All LiquidsLarge capacity with 240ml refill tank, suitable for different liquids including alcohol and thick cleaning liquid. Hand sanitizer and water should match 1:3. Beforeuse, please shake evenly. Long Standby Time: This machine has a built-in 1200mAh rechargeable battery. After being fully charged, it can spit out 2000 hand sanitizers and work continuously for 90 days. IPX4 Waterproof Dispenser: The latest waterproof base design prevents the dispenser and battery box from water corrosion. The charging port has a waterproof plug, which can effectively prevent water from leaking inside the machine,allowing you to use it safely in the bathroom.