Transforming the thermostat with energy savings and advancements you never imagined possible to help take care of your comfort, home health, and security needs. Brilliant at savings and comfort: saves you up to 26%* on heating and cooling costs by changing your home's temperature based on your routine and who’s home. Smart thermostat premium acts as your home monitoring hub, with built-in smoke alarm detection, advanced sensor technology to alert you of issues when you’re not home, and freeze detection to prevent burst pipes. Pair it with available sensors and ecobee smart security subscription for a whole home security solution. Features 4" full-color lcd touchscreen, 540 x 540 pixel control your home with your voice using siri or alexa-built in breathe better with air quality monitoring and alerts transforming the thermostat for home health works in harmony with leading smart home ecosystems including apple homekit transforming the thermostat with energy savings and advancements