Automatic faucets are touchless devices that use sensors to detect hand movement. When a user places their hands under the faucet, the sensor activates the water flow, allowing for a hands-free experience. This technology helps reduce the spread of germs and conserves water by only releasing it when needed. These faucets are commonly found in public restrooms, kitchens, and hospitals. They can be powered by batteries or connected to the building's electrical system. Many models also feature adjustable water temperature and flow rate, making them convenient and efficient for everyday use.