Using this paper towel dispenser is easy. Just stand in front of the intuitive LED light, and it will guide you to the towel activation zone to get a paper towel. When installing, make sure to create a rough wall opening with the right dimensions: 13' W, 16' H, and 4' D at least. Remember, if you're installing it after February 2023, you might need the free retro - fit kit (29744 - 135) for a larger wall opening. You can power the unit either with an AC adapter or 4 Alkaline 'D' Cells (you'll need to buy the cells separately). For maintenance, keep the dispenser clean by wiping it with a soft cloth regularly. Avoid using abrasive cleaners that could scratch the satin - finish stainless steel.