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Ending today, Altatac via Rakuten offers the ecobee ecobee4 WiFi Thermostat with Room Sensor and Amazon Alexa for $206.24. Coupon code "SAVE20" drops it to $164.99. With free shipping, that's $8 under our June mention and the best deal we've seen. (It's the lowest price now by $34.) It features voice control via Alexa, a 3.5" color LCD touchscreen, and compatibility with iOS and Android devices.