This is probably would have been better suggested to ecobee themselves, but my guess is that would be less likely.
I recently added a few more sensors, and when I got them, I wanted to see how accurate they are. (don’t care about absolute accuracy, as I don’t have a calibrated reference anyways, but relative to each other is more important),
I placed my 5 sensors on a platform against the wall, and within 6" of the ecobee itself. I placed a shelf below them which would have blocked airflow (and to hold them at the same level as the ecobee). This should provide for a very similar observed temperature.
The sensor accuracy specification from ecobee’s web site is +/- 1F - Which should mean that all of my sensors should be within 1.1C of each other (Would think that a Canadian company could provide specs in C, but hey, I can convert)
After my 5 hour test, the worst case instantaneous difference seems to be 1C, so they are all within spec. Individual reading times would account for some of the difference, as I assume that the sensors likely report on their own schedule, but still… all in spec.
What would be nice, is a way to celebrate all of the sensors, or allow a manual offset to be entered for each sensor. At least at the point of calibration, the lines would look closer to each other, I can see them drifting some amount over time, but a regular (yearly?) celebration could be done to validate accuracy/consistency.
I can imagine that most people would be happy with the accuracy as it is, but lets also agree that allot of people who buy multiple sensors are probably a bit of stats geeks
Is something that would be interesting, or doable?