I have a home with a couple of Sensi Wi-Fi thermostats for the air conditioning units. These units all have multi wire connections, and I’ve retrofitted them for the ‘c’ wire.
I currently have two gas fireplaces hooked up to old Robertshaw thermostats, using just two wires. These thermostats run on batteries . I would like to replace these thermostats with Wi-Fi thermostats. The ‘c’ wire is not an option so battery operation is mandatory.
Any suggestions?