Using your new Crestt Series touchless faucet is easy. Just wave your hand near the sensors and the water will turn on. It's powered by a battery pack with 4xAA alkaline batteries. When the indicator light shows low battery, simply replace the batteries. Make sure to use the tempered line adapter for a tempered water supply. This faucet has a great finish, but to keep it looking its best, wipe it down regularly with a soft cloth. Avoid using abrasive cleaners as they could damage the PVD finish. Also, note that this is a non-returnable item. It meets ADA guidelines and is certified lead-free, so you can use it with confidence.