Smart Infrared Sensor: This accurate smart infrared sensor built into the soap dispenser could spill soap in 0.5 seconds. Adjustable soap quantity: the soap dispenser would pump 1 ml of soap each time, if you need more, please hold your hands and wait another 2 seconds later, it will pump again. Waterproof: this non-contact soap dispenser adopts IP67 deep waterproof technology, it could effectively prevent soap or water from corroding the circuit. Visible window: the soap dispenser has a visible window to show the residual soap liquid, it may remind you to refill the soap in time. If you have any questions or questions, please feel free to contact us, we will reply you within 24 hours