Description touch-free Sensorsensor Soap Dispensers Applys Smart Infrared Sensor To Realize Automatic Dispensing, Then Dispense The Right Amount Of Soap Every Two Second. No Bacteria Transfer,ensuring You More Hygiene And Health durable Waterproof Our Soap Dispenser Comes With Waterproof Design, And With A Base Holder Helps To Prevent The Battery Compartment From Getting Soaked In Water. Washable, Anti-infrared Interference.easy To Set Up Long Press The Power Switch, The Blue Led Indicator Light Will Blink, Place Your Hand Underneath The Sensor Within The Range Of 5cm To Make The Battery Soap Dispensers Working.4 X Aaa Batteries, Not Includedwide Applications-suitable For All Types Of Liquid Soap:the Intelligent Sensor Soap Dispenser Is Compatible With All Types Of Liquids. And It Is Also Suitable For Hand Sanitizer, Shampoo, Body Wash/shower Gel, Laundry Detergent, Detergent And Lotion, Etc.; Please Note That Is Not Suitable For Liquid Alcohol Sanitizer.