Using this faucet is a breeze. Just wave your hand near the sensors, and the water will turn on or off automatically. It's powered by a battery pack with 4xAA alkaline batteries. When the indicator light shows low battery, simply replace the batteries. For installation, make sure to connect the tempered line adapter to the tempered water supply. Keep in mind that this is a non - returnable item. To maintain it, clean the faucet regularly with a soft cloth and mild cleaner. Avoid using abrasive materials as they can damage the Brushed Nickel PVD finish. This finish is very durable, but it's best to take care of it to keep the faucet looking great for a long time. Also, since it's certified lead - free, you can use it with confidence for all your water - using needs.