The Traeger Digital Thermostat Kit replaces the 3-way (smoke, medium, and hi) temperature control that comes standard on most Traeger Pellet grills. Included in this Thermostat Kit is an RTD (resistance temperature detector) sensor rod and a control board complete with a bright-orange LED display. Just set the knob on the control board to your desired temp, the RTD sensor will monitor the temperature, and the LED displays your temp.