COMPATIBLE WITH: Applicable with Masterbuilt Gravity Series Digital Charcoal Grills: MB20040122, MB20040220, MB20040221, MB20041020, MB20041220, MB20041320, MB20060321, Gravity Series 560/ 800/ 1050 XL,Replacement Part Numbers: 9004190170 Add up to four meat probe thermometers to your Masterbuilt Gravity Series, each with digital or WiFi control for safer temperature readings, so you can cook a variety of foods to the desired temperature EASY TO USE: plug and play grill temperature probe for all meats. Made of stainless steel and high temperature resistant materials for durability. Removable waterproof temperature probes are easy to clean and come with colored silicone on the end of each probe to not only prevent burns, but also differentiate between each piece of meat. PACKAGE INCLUDES: 3.5 mm Meat Probes x 2,Probe Clips x 2,Probe Grommet x 2, Colored Silicone Tubing x 2 TIPS Except for the stainless steel probe part, this product is not waterproof. DO NOT compatible with other brand electric smokers and wood pellet grill. Please clean the tip of food probe with a damp cloth in time after use. HOW TO AVOID LARGE FLUCTUATIONS IN THETEMPERATURE OF THE MEAT PROBEF 1. You can verify the reading with a glass of ice water before using 2. Re-lock the probe and reinsert the probe as firmly as possibleinto the controller. 3. Avoid accumulation of moisture and water in the probe. 4. Avoid severe bending or twisting of the probe wire.