TOTO soap dispensers offer automatic, touchless operation. The hands-free function dispenses soap without contact. The self-adjusting sensor on the spout detects the user's hand to automatically dispense a controlled amount of foam soap. The 3 liter (.08 gallon) reservoir and controller is designed to connect with three chrome plated spouts. The large 20 liter (5.3 gallon) sub-tank helps minimize frequent refills and helps ensure proper function of the soap dispenser. Includes controller base unit with 3 liter (0.8 gallon) reservoir, 20 liter (5.3 gallon) subtank with 16.4 ft. connection hose, three chrome plated spouts, mounting hardware and supply lines. TOTO soap is required for proper functionality and is sold separately.