Using this faucet is easy. Just wave your hand in front of the sensors, and the water will flow thanks to the touch - free dual - sensor activation. If you want to switch between different water flow options, you can select from the multiple low - flow laminar settings. For power, you can use the standard 4xAA alkaline batteries in the battery pack. Or, if you prefer, you can connect the optional AC plug - in adapter, which also has a battery backup in case of power outages. When it comes to maintenance, keep an eye on the low battery LED indicator in the sensor package. When it lights up, it's time to replace the batteries. To clean the faucet, use a soft cloth and mild soap. Avoid using abrasive cleaners as they can damage the Brushed Nickel PVD finish. Also, make sure the centershank's rotation - resistant locking nut is tightened regularly to maintain stability. This faucet is designed to be durable, but remember it's a non - returnable item, so handle it with care.