![Old thermostat works, but I can't get the Honeywell T9 to work. T9 require C Wire that was not in the wall. I added C wire & RC wire via plug-in 120v Old thermostat works, but I can't get the Honeywell T9 to work. T9 require C Wire that was not in the wall. I added C wire & RC wire via plug-in 120v](https://i.redd.it/qgn9tccrp6a91.jpg)
Old thermostat works, but I can't get the Honeywell T9 to work. T9 require C Wire that was not in the wall. I added C wire & RC wire via plug-in 120v
![Emerson Sensi 7-day Programmable Wi-Fi Smart Thermostat, No C-Wire Required for Most Systems ST55 - The Home Depot Emerson Sensi 7-day Programmable Wi-Fi Smart Thermostat, No C-Wire Required for Most Systems ST55 - The Home Depot](https://images.thdstatic.com/productImages/8da7df3a-222e-4de5-b8dc-012d9e691939/svn/white-emerson-programmable-thermostats-st55-64_600.jpg)
Emerson Sensi 7-day Programmable Wi-Fi Smart Thermostat, No C-Wire Required for Most Systems ST55 - The Home Depot
Nest thermostat not seeing the C wire but it's there... | Terry Love Plumbing Advice & Remodel DIY & Professional Forum
![$22/mo - Finance MoesGo Programmable WiFi Smart Thermostat for Home, No C-Wire Required by C-Wire Adapter, with Zone Remote Sensor, Remote Control Tuya/Smart Life, Compatible with Alexa and Google Assistant, 24VAC $22/mo - Finance MoesGo Programmable WiFi Smart Thermostat for Home, No C-Wire Required by C-Wire Adapter, with Zone Remote Sensor, Remote Control Tuya/Smart Life, Compatible with Alexa and Google Assistant, 24VAC](https://m.media-amazon.com/images/I/61k3DaUTqbL._AC_US1400_.jpg)