Using this faucet is easy. Just wave your hand in front of the sensors, and the water will turn on automatically. For power, you can either use the included 4xAA alkaline batteries or the optional AC plug-in adapter with battery backup. If you see the low battery LED indicator, it's time to replace the batteries. When it comes to maintenance, clean the faucet regularly with a soft cloth and mild soap. Avoid using abrasive cleaners as they can damage the Brushed Nickel PVD finish. Make sure to check the water flow and the sensor functionality from time to time. And always follow the ADA guidelines and local plumbing regulations when installing the faucet.