I have a Nest thermostat as well, and I like it. I've wondered before if they just had that one good idea and that was it. When they announced the smoke detecto

I have a Nest thermostat as well, and I like it. I've wondered before if they just had that one good idea and that was it. When they announced the smoke detector my jaw dropped. It just seemed like such an awful idea. I had thought maybe they would do a smart lawn watering system next. I know it's a smaller market, but it seemed better aligned with the thermostat as something that could be marketed as a money-saver. The smoke detector doesn't save you any money, it just seems like a solution in search of a problem. The lawn system could basically sell itself: local rebates on the up-front cost, the promise of saving you water/$$, and the name that Nest had already established from their thermostat. There are some other companies making products like this now, but I don't know if they're good.