Completely touch free by automatically dispensing towels when hands are placed below the sensor, unit is completely touch free. With a large detection zone, the Electra operates easily and reliably. The sheet delivery is smooth and quiet. The dispensers operate on 4 D-size alkaline batteries. It is extremely easy to load the paper and comes equipped with an easy to use transfer system that eliminates stub roll waste. Locking mechanisms help to prevent theft and the translucent covers allow for a view of the paper supply.