The Amazon smart thermostat makes it easy to control your home’s temperature remotely from anywhere. Alexa can automatically adjust the temperature according to your preferences, plus minimize usage when the electricity isn’t clean. An early Black Friday deal has knocked 29% off this handy gadget, so instead of $80, you can grab it for $57 today. For bigger spaces that could use two of these, a 2-pack bundle is now $110, down from $160. You can save more w