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I am a new owner of a ecobee3 lite. Everything seems to be installed correctly and, for the most part, it seems to be working correctly.
However, I am unable to enable Smart Home/Away. The option is ghosted.
It implies that I need a sensor to enable this. Is this really true? The ecobee is in a nexus location such that, if anyone is present, someone will pass in front of the ecobee at least once in the two hour window.
Is there some way to enable Smart Home/Away? This was really the whole point of getting this thermostat.