Product requires C-Wire, unit will not work without it.Control your Smart Home with Amazon Alexa for voice control (Alexa device sold separately) and Apple HomeKit with voice control using Siri, the Apple voice assistant7-Day Flexible Scheduling or Location Based Temperature control (GeoFencing). Uses geofencing technology to keep track of your smart phone's location.Adaptive recovery learns how long it takes to achieve the right temperature at the right time and automatically runs your system to get to your desired temperature when you want it, with auto change from heat to coolSmart Alerts - push notifications for filter changes and extreme temperature warnings keeps you informedEnergy Star Certified
