Built-in infrared smart sensor: soap will come out automatically. Fully automatic and touch-free operation. Two settings(press for 3s/5s) allow you to dispense different amounts of soap. No-drip innovation eliminates both waste and counter top messes. LED indicator inside the translucent tank illuminates with soothing mood light when dispensing. Low battery alerts by flashing the light intermittently. Great for liquid soaps， sanitizers， lotions and more. Perfect to use at bathroom， kitchen， office， school， hospital， hotel and restaurant.