Unfortunately, the PEK for the ecobee3 lite is different from our original ecobee3 and you wouldn’t be able to use the same one. However, the ecobee3 lite comes with its own PEK for those without a C wire.
I currently own an ecobee3 and use a Power Extender Kit (PEK). Can I use the same PEK for the ecobee3 lite?
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