The Ecobee4 smart WiFi thermostat model relies on a remote room temperature sensor with motion detection to sense when homeowners are home or away. The system can reportedly adjust temperatures accordingly and manage hot and cold spots in the home. The company says the Energy Star– certified product saves heating and cooling costs. The model comes with a built-in Amazon Alexa speaker for voice activation; homeowners can also control the thermostat through a smartphone app. The thermostat retails for $250.

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