Using this towel dispenser is easy. Just load a non - perforated, universal paper roll towel into the dispenser. When you need a towel, simply place your hand in front of the dispenser, and the patented LiDAR sensing technology will activate it to dispense a towel. Note that you'll need to buy 4 'D' batteries separately as they are not included. Keep an eye on the low battery indicator light; when it lights up, replace the batteries promptly. To maintain it, clean the fingerprint - free 304 stainless steel cover regularly with a soft cloth. Avoid using abrasive cleaners on the cover or the ABS high - impact back to prevent damage.