Using this product is easy. First, install it in the wall following the installation instructions. Open the battery cover at the front of the dispenser and put in 4 “D” size alkaline batteries or connect it to an AC adapter if you choose. Select the sheet length and 'Paper Saver' mode using the switches next to the batteries. Then load the paper towel as per the instructions on the dispenser. When you place your hands under the towel opening, the electronic sensor will automatically dispense a towel. The LED light will guide you. If it flashes green, it's ready to dispense; orange means low battery; red means it needs service. To empty the waste receptacle, unlock it with the provided key. For maintenance, keep the unit clean with a mild cleaner. Check the batteries regularly if you're using them. Make sure to order the optional LinerMate if you want to use disposable trash liners in the waste receptacle. Also, follow the electrical supply installation rules when using the AC adapter.