Compatible with D2/WiFIRE enabled grills, the Traeger Pellet Sensor keeps an eye on your supply, ensuring you never run out of pellets again. This smart device lets you monitor your pellet levels anytime, anywhere and even sends you automated alerts when you're running low, all through the Traeger App. Compatible with Pro 575, Pro 780, Ironwood 650 and Ironwood 885 Grills.