Home Depot offers the ecobee 3 Lite 7-Day Programmable Smart Thermostat bundled with the ecobee Room Sensor 2-Pack for $198 with free shipping. That's the lowest price we could find by $25. It monitors your heating and cooling systems and alerts you when something isn't working properly. It works with Amazon Alexa, Apple HomeKit, Samsung SmartThings, Wink, IFTTT, and more.