Using this faucet is easy. Just wave your hand in front of the sensors for touch - free activation. The battery pack, which comes with 4xAA alkaline batteries, powers the faucet. You'll see indicator lights on the spout to tell you if it's working, if it's activated, and when the battery is low. When it's time to replace the batteries, simply open the battery compartment and swap them out. To maintain the faucet, clean it regularly with a soft cloth and a mild cleaner. Avoid using abrasive materials as they can scratch the Brushed Nickel PVD finish. Since it's a non - returnable item, make sure you're satisfied with your purchase. And remember, this faucet complies with ADA guidelines, so it's suitable for all users.