About this item

Nest thermostats are designed to work without a C wire in most homes but for some systems, including heating-only, cooling-only, zone-controlled, and heat pump systems, you'll need a Nest Power Connector or C wire.
The Nest Power Connector is a simple affordable alternative to a C wire if your heating and cooling system requires one to power your Nest Thermostat
Installation is simple; the Nest Power Connector attaches to your furnace air handler, or zone controller and comes with simple instructions.
The Nest Power Connector is only compatible with 24 VAC systems; it won't work with millivolt or high voltage systems
The Nest Power Connector is the Nest thermostat C wire adaptor that's designed specifically for Nest thermostats
Operating Temperature –22° to 140℉ (–30° to 60℃). Made with 46% post-consumer recycled materials.

Google Nest Power Connector - C Wire Adapter for Smart Thermostats - 3.98in Accessory, Snow