Here is a smart thermostat with Amazon Alexa integration that allows you to control the temperature in your home and get things done using voice commands. You can use Room sensors to manage hot and cold spots. The device has a microphone and speaker, allowing you to ask for the news, order things, and do a whole lot more.
ecobee4 is smart enough to detect your presence with sensors to maintain proper temperature. You can control speaker and volume settings from the companion app. It will be available for $249 at this time.[Source]
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