A few years ago I purchased a Nest and it worked for a while, but then just couldn't maintain charge with my old two-wire boiler. I swapped it out for a old-school analog dial thermostat. I would now like to get into a camera/doorbell so that I can greet my AirBnB guests and need suggestions on the appropriate technology so that I can greet my AirBnB guests from my Android phone while I'm working remotely.
