The ecobee smart thermostat power extender kit (PEK) makes installation easy for homes without a common wire. Designed exclusively for ecobee smart thermostats, the PEK ensures seamless compatibility with 24 VAC systems. Magnetic mounting offers quick, hassle-free installation with no tools required. Access the easy-to-follow guide by simply scanning the QR code on the box. | ecobee Smart Thermostat Power Extender Kit C-Wire Adapter (EB-PEK2-01)