Today only, until 3 pm ET, Emerson Thermostats via Newegg offers the Emerson Sensi WiFi Digital Thermostat, model no. UP500W, for $94.99 with free shipping. That's the lowest total price we could find by $7, and the best deal we've seen for the thermostat alone this year. This thermostat allows for WiFi control via Emerson's iOS or Android app and requires two AA batteries.