Pentair 520588 IntelliChlor Sanitizer Pass-Through Cell For Winter or Start-Up Easytouch PS4/PSL4 Control Systems
Pentair 520588 Dummy Bypass Cell Replacement Pool/Spa Sanitizer and Automation Control Systems
Pentair 520588 IntelliChlor "dummy" Bypass Cell for Winter or Start-Up when the cell is not in use. Protect your IntelliChlor salt cell from cold weather, and start-up chemicals by replacing it with the "dummy cell". This will also extend the life span of the salt cell.