Description
Balboa G1900 Expander Board / Daughter Board X-P 1-Speed
Balboa expander board / daughter board used to add an additional 1‑speed pump (Pump‑2) or auxiliary output to compatible Balboa spa control systems such as VS510SZ, EL1000P2, EL2001, and other multi‑pump Balboa packs.
It replaces older part numbers 53544 and 53544‑01.