Bought a Nest with 3 sensors hoping to be able to balance the temperature across multiple areas of my house and on my own schedule. Little did I know that Google decided that only one sensor can be active at any given time (no average or multiple sensor capabilities whatsoever) and that the time windows for the active sensor CANNOT BE CHANGED (7am, 11am, 4pm and 9pm). Very disappointing for $500. Should have bought an Ecobee.