If anyone is trying to integrate Amazon Smart Thermostat, Amazon Echo Glow, or Amazon Smart Plug into Home Assistant, here is a basic chart of what has worked for me. Home Assistant entities are climate, sensor, select for the thermostat; light for the glow; switch for the smart plug.
Stability Note: Homebridge Alexa Smart Home Plugin
The plugin is generally stable, but it occasionally loses connection to the Amazon Account and requires re-authentication.
I haven’t found a pattern for this drop yet. The next time the connection is lost, I plan on looking for a way to set up a detection system in Home Assistant to notify me immediately when the failure occurs, instead of waiting until I notice it’s broken.