The CompuPool CPSC48 replacement salt cell includes the cell housing only. The Electrolytic Cell has two precious metal oxide coated titanium anode plates separated by insulators. A reversing DC voltage is applied to the cell and chlorine gas is produced without any calcium build up on the plates. These cells require no maintenance and have a clear cell case to enable the chlorine manufacture to be visible while operating. The CPSC Series is a high-performance salt water chlorination system that lets you enjoy perfectly clear pool water without the use of harsh chemicals. It is a safe, clean, easy alternative to dosing your pool with dangerous and expensive chemicals.