Using this Bobrick faucet is a breeze. Just place your hands under the faucet, and the hidden sensor will detect them right away, turning on the water. The sensor range can be adjusted to fit your needs. To set the time - out duration, you can follow the simple instructions in the manual. This helps save water when you're done using the faucet. When it comes to batteries, make sure to replace the 4 'AA' batteries regularly to keep the faucet working properly. The in - line filter should be checked and cleaned every few months to ensure good water flow. Also, avoid using harsh chemicals to clean the faucet, as they may damage the polished chrome finish. A soft cloth and mild soap are enough to keep it looking great.