The Xiaomi Mi Automatic Foaming Soap dispenser uses a responsive infrared sensor that eliminates the need to touch the device to wash hands. This makes it a very hygienic device to place at your business or in your home! The dispenser dispenses soap after only 0.25 seconds after hands are detected. Thanks to the use of the Soap Dispenser, as much as 99.9% of the bacteria on your hands are killed!