Balboa Water Group Expander Board Kit, 2-Speed | 55137 Luna Installs inside the pump strainer

Installs inside the pump strainer housing

Supports efficient and quiet spa jet operation

This component is commonly required when troubleshooting control panel failures

and ease of use in your outdoor games

Balboa Water Group Expander Board Kit, 2-Speed | 55137 Luna Installs inside the pump strainerBalboa Water Group Expander Board Kit 2 Speed 55137 Enhance Your Spas Circulation with Reliable Two Speed Pump Control Introduction Optimize your spa system with the Balboa Water Group Expander Board Kit 2 Speed 55137, designed to seamlessly add a two speed pump output for improved water circulation. Built with 30A fuse protection, this durable expander board is compatible with VS520SZ, VS520DZ, BP7, BP501, and various other Balboa control systems.