Top features: - No professional installation needed to upgrade your homes heating - Save tons on utilities by taking advantage of the Nest app for iOS and Android - Sync up with Google Home and control the temperature with your voice - Heat Link E lets your device modulate the temperature automatically No professional installation neededThe Nest Thermostat E is the ideal cost cutting solution for your home. Most utility expenses come from keeping your home warm - it make sense to take advantage of a smart device works with your existing heating to run efficiently. This device doesn't need professional installation, so you can install it yourself and start saving right away.It includes the Thermostat E and the Heat Link E. The Heat Link goes in the same place as your current thermostat, while the Thermostat E can be placed somewhere handy in your home.Save tons on utilitiesDownload the easy-to-use Nest app on your smartphone and control your home's temperature, anytime and from anywhere