Yea, the Keen site says that the sensor in the vent itself "guesses" at what the room temp will be.
Also, I don't have motion sensors in rooms -- well, per se. The master bedroom has an ecobee sensor, but the other bedrooms only have an echo dot, nothing smart for temps. So, based on that, should I pick up some Keen temp sensors?
And, can the KL app pull in, say the temp from the ecobee thermostat to use with the Keen vents to help control the vents in that room (dining room)?