Emerson Thermostats Sensi Smart Thermostat, Wi-Fi, UP500W, Works With Alexa

Works with Alexa for voice control (Alexa device sold separately).
Connect Sensi thermostat to your home Wi-Fi network and control from anywhere via free mobile app (compatible with Android and iOS).
Integrates with Amazon Alexa for voice control and Wink smart home platforms, and works with Google Assistant and Google Home using the free Wink app.
Works with HVAC systems in most homes