. This "ultimate" hands free control gives you the ability to control virtually every function of the fireplace from the comfort of your couch. You control the flame and heat output manually, by running the fireplace on thermostat mode or setting your fireplace to the "Smart" mode. The "Smart" mode automatically modulates the fire and heat up and down to maintain the beauty of the fire and room temperature. Most gas inserts only have the ability to turn the flame on and off. Maintain the room temperature with the "Smart" mode and your room will stay at a more constant temperature and you will be able to enjoy the beauty of the fire longer using the same amount or less fuel.