Thanks again for the quick reply, CanadianSpaTech.
It's definitely an S-Class SC-CF Spa Pack Dual-pump system.
Any idea what my options are for upgrading to a WiFi-enabled remotely-controlled system?
I've seen some DIY options which are pretty involved and gut the controls, replacing with a UniPi controller.
I've also seen Gecko's in.touch2, but looks like I'd need to replace this controller with one that's compatible with the in.touch2.