Diplomat Series Automatic Soap Dispenser. Plastic battery box, holds (3) C-cell alkaline batteries. Battery infrared metering sensor activation. 2 inch - 3 inch sensing range. Heavy gauge stainless steel tank body with exposed surfaces in architectural satin finish, designed with unique dual-curve geometry. ABS plastic wall plate. Reusable plastic reservoir. Container dispenses 27oz foam soap. Surface-Mounted. Compliant to ADA standards, consult codes for installation requirements.