Using this soap dispenser is easy. First, select your preferred power supply, either the battery pack with 4xAA alkaline batteries or the A/C Adapter. Then, fill the 70.5oz top - fill soap tank with any non - proprietary bulk foam soap. When you place your hand under the dispenser, the touch - free dual sensor will activate and dispense soap. The indicator light at the base of the spout will show you the power status, when it's activated, and when the soap is running low. As for maintenance, since it has a vandal - resistant construction, it's quite durable. However, you should regularly check the soap level and refill it when needed. Also, keep it clean by wiping it with a soft cloth. Avoid using harsh chemicals on the Brushed Nickel PVD finish as it might damage the surface. And remember, this is a non - returnable item, so make sure it meets your needs before purchasing.