Replacement Thermostats? Z-Wave or Wifi Compatible
Want to replace three Honeywell THX9421R5021WW 2-wire thermostats with Z-wave, wifi or whatever compatible ones, or add wifi z-wave, whatever to the existing ones.
Don't want to have to re-wire them back to the A/C units as a result, just replace the boxes on the wall with ones I can program and monitor remotely.
I'm rolling out Z-wave light switches etc. throughout the home, and the 'stats ideally need to be Z-wave or wifi compatible, ideally working with the Samsung Smartthings hub and app I have already installed.
I think the existing thermostats are wired up to a Honeywell THM5421R02 unit in the attic.