Never run out of pellets! Monitor pellet levels on your D2 WiFIRE®-enabled grill anytime, anywhere with the Traeger Pellet Sensor. Receive low pellet alerts via the Traeger app, ensuring you're always ready to grill. This metal sensor mounts directly into the hopper with included hardware and integrates automatically with WiFIRE upon installation. It even features an LED light to illuminate the pellet level inside the hopper. For accurate readings, calibrate the sensor with an empty hopper. The sensor measures approximately 3.8cm x 6.4cm x 15.9cm.