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This one comes with an adapter included for exactly that purpose
Sorry, there was a problem. Please try again later.You may be able to install your ecobee smart thermostat using the included Power Extender Kit (PEK). Learn more: https://support.ecobee.com/s/articles/Installing-your-ecobee-thermostat-with-the-Power-Extender-Kit-no-C-wire
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