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There are only a few differences between the products. The smarter wi-fi thermostat that delivers unparalleled value control and comfort. Save an average 23% on your heating and cooling each year. Easily adjust temperature and comfort settings from your Android and iOS devices. Ensures you’re comfortable by using thousands of data points to adjust your home to the right temperature. Get free monthly reports on how much energy you’ve saved and tips on how you can save even more. Fast easy installation in 30 minutes or less. Use our handy step-by-step guide right on your phone. Hardwired for reliability means doesn’t steal power from your equipment to charge itself. Supports Amazon Echo Works with Apple HomeKit IFTTT Samsung SmartThings Wink and more.