Before purchasing, please check if the Wi-Fi thermostat you will pair with this adapter is compatible with your home and determine if your home needs a C-wire power adapter. The C-wire adapter should work for all applications where the Thermostat being replaced does not have a common wire and has Y and G wires connected.


The C-wire power adapter makes Honeywell Home smart thermostats compatible with most homes that do not have a common wire.


Quickly and easily power connected thermostats that require a C-wire. Easy push terminals and an adhesive backing make installation quick and easy, while the closed cover hides internal components.


Use for Wi-Fi, 24V Honeywell Home thermostats when a common wire is needed but not present.  Please note that your home may have an unused C cable which should be checked before purchasing this adapter.


Easy push terminals and an adhesive backing make installation quick and easy.


The simple adhesive mount allows you to attach the adapter to the outside of your oven.


COMPATIBLE WITH: Forced air (gas, oil or electric), hot water and steam, and heat pumps with electrical backup.  Does not work with electric baseboard heat (120-240V).


NOTE: The C-Wire Adapter will work with multi-stage systems, including heat pumps, if your Wi-Fi thermostat works with these systems;  However, follow the installation instructions carefully to avoid disconnecting incorrect cables.


For use with Honeywell Home WiFi Thermostats, RedLINK 8000 Series Thermostats





Install a smart thermostat without a C wire. The C wire provides a path for continuous power to Wi-Fi thermostats, but homes are often missing this common wire.  The C-Wire power adapter makes Honeywell Home smart thermostats compatible with most homes that do not have this cable