【COMPATIBLE MODELS】- 9904200043 Controller Board (Non-Wifi) Compatible with Masterbuilt Gravity Series 800 Digital Charcoal Grill + Smokers, Control Panel Replacement Parts for Models: MB20040122, MB20040221 (TIPS: TIPS: This Controller DOES NOT SUPPORT WIFI, Sometimes the "Masterbuilt Classic" or " Masterbuilt" APP system is unstable and Bluetooth often connect failure or display "error", If this happen to you, try it a few more times, Or use controller physical push-button to control.) 【EASY TO USE】- Easy to install and Concise buttons ensure smooth and simple operation. Set the temperature on the digital control panel and the Digital Fan maintains the desired cooking temperature. You can smoke, grill, sear, bake, roast and so much more, easily get delicious barbecue. Enjoy relaxing time with family and friends. 【HIGH QUALITY】- Controller Assembly with LED Digital Display. Control temperature and cook time with the digital control panel, accurate display of the smoker grill internal temperature. High temperature resistance and long service life. 【PACKAGE INCLUDES】- 1*Digital Control Panel (NOTE: DOES NOT COME WITH ANTENNA). TIP: Many times a defect in another part can be Causes the controller to display an error temperature or not work. Because the motherboard connects to many other parts (such as Meat probe, Temperature Sensor and Hopper Lid/Door Switch), and their damage can make the control board not working. So please check to see if the other parts are working properly. 【WORRY FREE SERVICE】- If you have any questions about Controller, please feel free to contact us, we will definitely provide you with a satisfactory solution. If you are dissatisfied with the product, you can request a replacement or a refund. Contact us! We will show you a sincere attitude! 9904200043 Digital Control Panel for Masterbuilt Gravity Series 800 Digital Charcoal Grill + Smokers, Controller Replacement Part Compatible with MB20040122, MB20040221