PERFECTLY COMPATIBLE: Compatible with Masterbuilt Electric Smokers: MB20077119, MB20077319, MB21077819, MB21077919 MONITORING TEMPERATURE: Temperature sensor allows you to track internal temperature of your smoker and sends a signal back to the controller to maintain consistent grill temperatures TEMP SENSOR SIZE: Temperature probe sensor 9/16" internal grill sensor and 30.7" (78 cm) wire lead PACKAGE INCLUDES: Contains only temp probe sensors. Screw and nut are NOT included NOTICE: Replacement of Masterbuilt temperature sensors are available in a variety of styles. Please DO NOT order until confirming the sensor style that fits your smoker

Sensor probe allows you to track the internal temperature of your smoker and is compatible with most Masterbuilt electric smokers. Now you can check your internal temperature at the control panel without opening the door; leaving the heat and smoke inside the smoker. Before ordering a temperature probe, be sure to check the old one to ensure plug consistency.