Google Nest
GA02493-US – Thermostat Power Connector

Nest thermostats are designed to work without a C wire in most homes. But some systems may require a C wire for consistent power. The Nest Power Connector is a simple and affordable alternative to a C wire, and costs much less than hiring an electrician to install a new C wire through your walls.

• Works with the Nest Thermostat, Nest Thermostat E, and 3rd gen Nest Learning Thermostat. Identify your thermostat at — www.nest.com/whichthermostat
• Works with 24 VAC systems only. Millivolt and high-voltage systems are incompatible.
• Package Contains: Nest Power Connector, Wire Connecrtors, Wire Labels, Stickly Pad and Installation, Safety, Warranty & Regulatory guides.

Also known as “Add a wire” or “Common Wire”