Using this soap dispenser is easy. First, choose your power supply - either a battery pack with 4xAA alkaline batteries or an A/C adapter. Fill the 70.5oz soap tank from the top with any non-proprietary bulk foam soap. Wave your hand in front of the dual sensors, and the soap will dispense. The indicator light at the base of the spout will show power status, when it's activated, and when the soap is low. Remember, this item is non-returnable. For maintenance, keep the dispenser clean with a soft cloth. Avoid using abrasive cleaners as they might damage the PVD finish. Check the anti-rotational gasket/washer regularly to ensure it's in good condition. Since it meets ADA guidelines, use it according to those standards for proper accessibility.