24 Volt Power Adapter/Transformer,C-Wire Adapter Thermostat，Compatible with All Versions of Ring Doorbell and Thermostat for Ecobee,Sensi and Honeywell(25Ft Cable)

Honeywell Home Wi-Fi 7-Day Programmable Thermostat (RTH6580WF), Requires C Wire, Works with Alexa

Emerson Sensi Touch Wi-Fi Smart Thermostat with Touchscreen Color Display, Works with Alexa, Energy Star Certified, C-wire Required, ST75W

Honeywell Home RTH9585WF1004 Wi-Fi Smart Color Thermostat, 7 Day Programmable, Touch Screen, Energy Star, Alexa Ready

Emerson Sensi Wi-Fi Smart Thermostat for Smart Home, DIY, Works With Alexa, Energy Star Certified, ST55

Honeywell Home RCHT8612WF T5 Plus Wi-Fi Touchscreen Smart Thermostat with 7 Day flexible programming and Geofencing Technology Black

Bosch Thermotechnology Bosch Connected BCC50 Wi-Fi Thermostat-Compatible with Alexa and Google Assistant, All-in-One, Touch Screen, Safety Control, Smart Home, White

Emerson 90 380 Fan Relay 24 Volt Coil, 1

ecobee3 lite Smart Thermostat, 2nd Gen, Black

Honeywell TH9320WF5003 Wi-Fi 9000 Color Touch Screen Programmable Thermostat, 3.5 x 4.5 Inch, White, 'Requires C Wire"

Google, T4000ES, Nest Thermostat E, Smart Thermostat, White