Secondary control points can make a spa feel much more convenient, especially in larger layouts or setups where one panel alone is not enough. This AX40 auxiliary topside panel is designed to restore that convenience in compatible systems when the existing auxiliary control no longer responds the way it should. Because it is supplied without the overlay, this panel is especially useful when the visible function face needs to be chosen separately to match a specific final application. That helps keep the replacement more precise and gives you a better chance of ending up with a panel that looks and functions the way the original system intended. When an auxiliary panel fails, the spa can still operate, but the overall experience becomes less smooth. You lose the convenience of having control where you actually want it, and that makes the setup feel less complete. Replacing the secondary panel restores that ease directly. For homeowners, this is the kind of repair that improves the way the spa fits into everyday use. It is not only about fixing electronics. It is about bringing back a control point that makes the spa more comfortable and practical to enjoy. In the proper AX40 auxiliary configuration, this panel helps restore a more complete control layout and supports the convenience that secondary access is supposed to provide. Auxiliary topside panel for compatible AX40 systems Supplied without overlay for application-specific matching Restores convenient secondary control access Useful when the original auxiliary panel is unresponsive or worn Helps make the spa easier to use from more than one location