No touch operation for the ultimate in user hygiene - you only touch the paper! Accommodates rolls up to 10" for hygienic, single-towel-per-hand-dry use. Offers two modes of operation: a paper hidden mode and paper exposed modes. Wave your hand under the sensor to dispense a clean, sheet of paper in the paper hidden mode (healthcare), or leave the towel exposed and the dispenser will dispense a sheet when the exposed sheet is torn off. This mode is excellent for high traffic areas. An adjustable time delay between cycles helps control usage. Satisfies customers and reduces maintenance costs for all Away from Home applications. Requires 4 D cell batteries (not included). Longest battery life in the industry -- tested up to 100,000 cycles. For use with: Sterling Select 10" Hardwound Roll Towel, White, 6/cs, #76301.