Infrared Smart Sensor: The hands-free soap dispenser has a built-in precise infrared smart sensor and a detection time of only 0.5 seconds to filter out the liquid. Adjustable Soap Quantity: 1 ml is pumped out each time. If you need more, please keep your hands in place and wait for another 2 seconds until the amount of soap is pumped out again. Leak-proof: The sealed rubber material on the bottom of the soap dispenser prevents the soap from leaking and prevents the dispenser from sliding around the counter-top. IPX6 Waterproof: Touchless soap dispenser with waterproof technology in protection class IP67 to prevent soap or water from corroding the circuit board. Visible Window: The soap dispenser with a visible window enables you to monitor the remaining liquid and refill the soap in time.