Using this paper towel dispenser is easy. Just place your hands in the sensor zone, and it will automatically dispense a pre - set length of towel. To set the towel length, delay, and economy mode, use the three three - position switches. When the towel roll runs out, unlock the door and replace it with a new roll. If you have a partial roll left, you can transfer it to the stub roll position and reload a full roll for continuous use. Make sure to use an 8 - inch standard towel roll up to 800 ft. (244m) long. Keep the dispenser away from water to avoid damage. Regularly check the LED to ensure it's working properly. Clean the sensor area gently with a dry cloth to maintain accurate sensing.