- A motor turns an auger which feeds pellets into a firebox.
- There, a hot rod (or auto igniter) automatically ignites the pellets, and a combustion fan keeps them burning.
- A fan inside the hopper maintains positive pressure which prevents burn-back in the auger tube.
- A sensor mounted inside the grill continually sends data to the on-board computer, and the controller adjusts the air and pellet flow to maintain the temperature you set.