This is a Honeywell Wi-Fi digital Thermostat Model RTH6580WF It is compatible with: Forced air - gas - oil & electric Hot water & steam Heat pumps with electric backup It does require 24VAC power ("C" wire)

Automatic change from Heat to Cool and vice versa Display in Centigrade or Fahrenheit 12 or 24 hour clock

I purchased this online for $115 but it didn't work for me because my furnace never had the 24VAC. I've made a couple of notes on the box and in the manual so it's not brand new. However it has not been used either. My loss is your gain.