Using this towel dispenser is a breeze. Just place a non - perforated, universal paper roll towel inside. When you need a towel, simply hold your hand in front of the dispenser, and the LiDAR sensing technology will activate it to dispense a towel. Remember, the batteries are not included, so you'll need to buy 4 'D' batteries to power it. The low - battery indicator light will let you know when it's time to replace the batteries. To keep it looking good, clean the fingerprint - free 304 stainless steel cover with a soft cloth. Avoid using abrasive cleaners on it. Also, make sure to keep the dispenser away from water and high - humidity areas to prevent damage to the internal components and the ABS back.