Grear Compatibility.
This was a perfect replacement for an older failed spa pack. The pack cam pre-configured and well marked. I labeled the wires as I disconnected them, removed the old spa pack, and installed the new pack. The labeled wires made it easy for me to reconnect, but it was not necessary, since the connectors for each item are unique and the board is well marked. I went slowly; it took me 30 minutes in total.