VIVISKY Soap DispenserBatter-Powered Automatic Wall-Mount Touchless-handfree Liquid Infrared Sensor Soap Shampoo Sanitizer Dispenser (D9030-115110135) For home kitchens, bathrooms, offices, kindergartens, schools, airports, and hotels and other public places. Operated by Wall-mounted roof and dark button, easy to install and safe to use. Battery powered: 4*01.5V AA batteries(batteries not include), can work 20,000 times. Auto-sensing, free access, to prevent cross-infection. Single out the liquid 1ml, avoid unnecessary waste.