Electronic sensor automatically dispenses towel when hands are placed under the towel opening. Dispenses universal, 1-1/2" to 2" diameter core, up to 8" diameter, 8" wide, non-perforated, non-proprietary rolls. Towel length can be set to 9", 12", 15". Optional "Paper Saver" feature allows a shorter second sheet to dispense immediately after the first sheet. The "Paper Saver" feature has two second sheet length options: 25 percent shorter sheet length or 12.5 percent shorter sheet length. Dispense delay can be set to 1, 2 or 3 seconds. There is no delay when "Paper Saver" option is selected. LED light on dispenser blinks when battery needs to be changed. The battery pack holds 4 "D" sized alkaline batteries (not furnished). Dispenser includes a 3-1/2" diameter stub roll feature. When the stub roll is depleted, main roll automatically starts dispensing without the need to open the dispenser. Durable plastic construction; translucent navy cover. Locking cabinet. Operates with 4 "D" alkaline batteries (not included) or 6-volt DC power supply. Measures 12-3/8" width by 15-1/4" height by 9-1/2" depth.