“I’m not sure what is a power supply to my current thermostat. I have a pic below. It doesn’t say which voltage is using. I would like to replace it with WiFi thermostat if compatible. Is there a way to tell?”
1-1 of 1 Answer
Easiest way is if your thermostat relies on battery then you dont have a c wire. But thats what your lookin for a believe is the c wire on your current system.
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