TOTO soap dispensers offer automatic, touchless operation. The hands-free function dispenses soap without contact. The controller with 3 liter (0.8 gallon) and 20 liter (5.3 gallon) subtank set are designed to work with three spouts. The large 20 liter subtank helps minimize frequent refills and helps ensure proper function of the soap dispenser. Compatible TOTO soap is required for these dispensers. Includes controller base unit with 3 liter (0.8 gallon) reservoir, 20 liter (5.3 gallon) subtank, mounting hardware and supply lines. Compatible TOTO spouts and soap sold separately.