For converting traditional manual or electric toilet units (50.205../50.206.. / 50.207.. / 50.211.. / 50.217.. / JABSCO / RARITAN / RN69 / etc.. ) in vacuum toilet units. the kit includes: the base pump unit and the electric control panel, as all vacuum toilet units, self-priming pumps 16.193.12-24 and any electro-valves 50.203.10-11 are sold separately.