Well, I installed the EasyTouch Wireless Controller. Everything seems to work just fine. I was pleased to see that I was able to automatically upload all of the data & settings from the outdoor EasyTouch control panel. The only remaining task will be to assign specific functions to the 3 Aux buttons. I want to select the same 3 functions that were assigned to my now-disabled SpaSide. Hope fully that won't be too confusing.
One question: I apparently assumed that there was a supplied bracket to mount the wireless controller on a wall. Since the controller did not come with any mounting hardware, I would appreciate any thoughts some of you might have. Thank you so much.