The Ecobee C-Wire Adaptor Power Extender Kit (PEK) 810-00002 is a white power extender kit designed for use with the ecobee3 lite thermostat. This kit includes everything needed to extend the power supply for the thermostat and allows for easy installation. The 5-wire wire configuration ensures a secure connection for optimal performance. Perfect for those looking to upgrade their heating and cooling system with the ecobee brand.
### Compatible Ecobee Devices with the Power Extender Kit (PEK) 810-00002
The Ecobee C-Wire Adaptor Power Extender Kit (PEK) 810-00002 is designed to provide a common (C-wire) connection for Ecobee smart thermostats in homes without existing low-voltage wiring. It is compatible with 24 VAC HVAC systems and is **not compatible** with millivolt systems, high-voltage systems, dual transformers, fan coils, or communicating units. Based on official Ecobee documentation and product listings, it works with **all Ecobee smart thermostats except the Smart Thermostat Essential and Smart Thermostat Lite** (these entry-level models do not require or support the PEK, as they are designed for simpler installations without it).
#### Key Compatible Devices
Here are the primary Ecobee thermostat models confirmed to be compatible:
| Model Name | Common Model Number(s) | Notes |
|------------|------------------------|-------|
| ecobee3 | EB-STATE3-* | Original model; PEK enables C-wire functionality for reliable power. |
| ecobee3 lite | EB-STATE3L-* | Budget-friendly version; frequently bundled with PEK in sales. |
| ecobee4 (SmartThermostat with voice control) | EB-STATE4-* or EB-STATE5-01 | Mid-range model with built-in Alexa; PEK required for non-C-wire setups. |
| Smart Thermostat Enhanced | EB-STATE6E-* | Updated enhanced model; supports advanced features with PEK. |
| Smart Thermostat Premium | EB-STATE6-* | Premium model with radar occupancy sensor and Siri integration; PEK ensures stable performance. |
#### Additional Details
- **ecobee5**: This is not an official model name but commonly refers to the SmartThermostat with voice control (ecobee4). It is fully compatible.
- **Installation**: No tools required; uses magnetic mounting on the furnace. Includes a QR code for guided setup. Installation typically takes 30-45 minutes.
- **Verification Tip**: Use Ecobee's [Thermostat Compatibility Checker](https://www.ecobee.com/en-us/compatibility/thermostat/) to confirm your specific HVAC system and thermostat model.
- **Sources**: This information is drawn from Ecobee's official product page, support resources, and verified retailer listings (e.g., Amazon, eBay, Best Buy). For the latest details, check Ecobee's support site.