Bama, in the above schematic, where would I pull off 24v to power my wifi (Shelly relay). I assumed the terminals at the bottom of the transformer would be 24v but when I test them against a ground, it shows nothing on my multimeter.
Well that explains it. The problem I have is the WiFi signal is weak to my equipment pad so the Shelly has trouble connecting. That leaves me with no manual method of turning on the spa.The transformer is 24 VAC not vdc that the Shelly requires. So you'd need to add a bridge rectifier to the secondary of the transformer to convert the AC voltage to DC voltage.