Sensor Operated Soap Dispenser Benefits of the Electronic Soap Dispenser: ¢ Touch-free operation ¢ Economical pre-measured soap dispensing saves soap and money ¢ Encourages hand-washing ¢ Three-year guarantee ¢ Eliminates "untidiness" from refillable containers The ESD comes in four forms: ESD-250 Battery-powered model Electronic Soap Dispenser, which allows one-trade installation. ESD-25085 Battery-powered model Combo Sloan Optima Faucet and Electronic Soap Dispenser - a perfect combination - Industry's most popular electronic faucet EBF-85 and the Industry's newest soap dispenser ESD-250. ESD-200 AC-powered model Electronic Soap Dispenser. ESD-20080 AC-powered model Combo Sloan Optima Faucet and Electronic Soap Dispenser - a combination of the Industry's most popular electronic faucet ETF-80 and the Industry's newest soap dispenser ESD-200.Sensor Operated Soap Dispenser features: ¢ Modular, One-piece Construction ¢ Active Infrared Sensor ¢ 120 VAC Plug-in Transformer (Model ESD-200) ¢ Low Battery Indicator (Model ESD-250) ¢ Mounting Hardware included ¢ Low Soap Level Indicator ¢ Easy Loading Disposable Soap Refills ¢ New Pump and Delivery Tube with each RefillUnit supplied with one 800 ml. Container of Soap