[Infrared Smart Sensor] Hand-free soap dispenser comes with built-in accurate infrared smart sensor, and just 0.5 seconds sensing time to make liquid out. [Adjustable Soap Quantity] 1mL pumps out each time, if you need more please stay your hands and wait another 2 seconds later, it will pump out again. [Anti-leakage] The sealed rubber material on the soap dispenser bottom will prevent soap leakage, and keep dispenser not be sliding around your countertop. [IPX6 Waterproof] Touchless soap dispenser with IP67 rating deep waterproof technology to prevent the soap or water to corrode circuit board. [Visible Window] A visible window acts as a reminder to monitoring liquid remaining and get in time to refill the soap.