I purchased the upgrade for my 2014 Caldera Cantabria after a freak failure of a wrist jet seal that caused the jet connection to leak during last winter which i happen to find by luck after work one day. The tub had entered an limp mode because the water fell below the filter area and got a low water message The connextion system went in to warn me of any power outage or error at the panel along with controlling from my waterproof smartphone and tablet. I had one incident since when I was out with the family at dinner and got the notice that the hottub was not responding and when I got home, I found the tub off and a bunch of my breakers were tripped. A lightning storm was to blame which fried my tub GFCI and the dealer already had a record of the exact timing it was not responding and would have reached out to me if I had not reached out to them first. After some troubleshooting i was able to pickup a replacement from them and return the broken one under warranty without a service tech visit.
Overall it is an expensive convenience and woefully needs better design but it works and have never failed me. I can control my lights, jets, cleaning cycle, audio power and see my current temp and set it.
I will be looking into trying to enable iftt capability to allow me to set some settings through my harmony remote for the outdoor tv.
Mad