With this EZ faucet adaptor, you can wash your hands without ever touching the faucet. built-in infrared sensor automatically turns water on and off for totally hands-free operation installs easily on most standard sink faucets; no need for a plumber or remodeler minimizes spread of germs and wasted water water starts when your hands are in sensor range; stops when you move out of range manual override button allows you to run water for 3 minutes, then reverts back to automatic for continued water savings makes it fun and easy for kids to wash hands; uses 70% less water than standard faucets Measures 2.75x2.38x3.5H. 1-year manufacturer's limited warranty. Uses 4 AAA batteries not included. Clean with damp cloth. Imported.