GVS Vine Common Wire Kit ( C-Wire Connector )
•The C-Wire Power Adapter makes Vine Home smart thermostats compatible with most homes that don't •have a common wire.
•Quickly and easily power connected thermostats that require a c-wire.
•Use for Wi-Fi, 24v Vine Home thermostats.
•Quick and easy installation.
•Simple 3M adhesive tape allows you to attach the adapter well.