Automatic soap dispenser: Touchless foaming soap dispenser with high foam and low foam modes, it better meets your requirement. Quick installation and safety refill: Remove the soap tank from the bottom to refill. You don't have to worry about the damage by liquid seeping into the dispenser through the button. Requires 4 AA alkaline batteries, long standby mode, can be placed and moved at any time to avoid electrical safety issues.the battery is not included in the package.