The ASI 20364 Roval Automatic Touchless Soap Dispenser helps maintain the sanitary conditions in your washroom facilities by dispensing soaps without users having to touch the unit. The dispenser features a hands-free sensor controlled by microprocessor digital circuitry, which requires four AA size batteries for operation. An LED light on the unit flashes when a battery change or servicing is required. Designed to match other washroom accessories in the ASI Roval collection, the soap dispenser holds 33.8 ounces of viscous hand soaps, detergents and lotions. The soap is contained in a translucent tank and is dispensed in preset amounts that range from 1/5 of an ounce to 1/2 of an ounce in volume. To prevent tampering, the unit is secured with a keyed tumbler lock. Featuring an attractive satin finish, the touchless soap dispenser is made of 22-gauge, type 304 stainless steel and measures 5-1/2 inches in width by 10-7/8 inches in height by 4 inches in depth.