A must have in institutions like hospitals, medical facilities, day care centers, schools, food service and hosptiality environments where cross-contamination is a concern. Fully automatic, which allows product to be dispensed without having to touch the unit. Easy to use. Operates with 6 "D" cell batteries (not included). 1 liter cartridges are easy, hassle free & quick to change. Works with alcohol sanitizers, foam, lotion and gel soaps. Also works with medicated creams.