COMVIEE Digital WiFi Controller Replacement for Masterbuilt Gravity Series 800 — Part 9904200043, WiFi/Bluetooth & Precise Temp Co

COMVIEE's Digital WiFi Controller replacement restores full smart-control to Masterbuilt Gravity Series 800 grills and smokers, enabling precise temperature management and WiFi/Bluetooth connectivity.

If your Masterbuilt Gravity Series 800 smoker (models MB20040122 or MB20040221) shows controller errors, unresponsive buttons, or lost WiFi/Bluetooth capability, this COMVIEE replacement control panel (part 9904200043) is designed as a direct-fit swap. It includes the digital control board and external antenna so you can regain temperature control, set cook times, and monitor probes from the grill or your phone.

How will this controller improve my grill’s performance?

Replacing a faulty control board brings stability to temperature regulation and restores wireless features. The LED display gives clear temperature readouts while the integrated digital fan adjusts airflow to hold your setpoint, reducing temperature swings during long cooks.

• Precise temperature readout on LED digital display
• Digital fan control reduces fluctuations and maintains setpoint
• Restores WiFi and Bluetooth for remote monitoring and adjustments
• Compatible with probe monitoring for accurate internal-meat temps

Is this replacement easy to install and use?

Yes — the COMVIEE controller is built for straightforward DIY installation with concise buttons and an external antenna that plugs into the assembly. You’ll only need basic tools to remove the old board and mount the new one, and the panel’s interface mirrors the original layout for familiar operation.

• Direct-fit for Masterbuilt Gravity Series 800 (models MB20040122, MB20040221)
• Includes the antenna needed for WiFi/Bluetooth signals
• Simple button layout for setting time and target temperature
• Plug-and-play replacement—no extra components required

What connectivity and functions are restored with this part?

This control panel returns both WiFi and Bluetooth connectivity so you can use the Masterbuilt app or compatible smart devices. Functions such as setting cooking modes, adjusting temperatures remotely, and reading probe values are supported once the controller is installed and linked to your network.

• WiFi and Bluetooth connectivity for remote control
• Monitor and adjust temperature from compatible apps
• Supports meat probe monitoring and display on the panel
• Maintains set cooking times with an accurate digital timer

How durable is this replacement part and what’s included?

COMVIEE builds the assembly with heat-resistant components and a long-life LED display intended for outdoor cooking conditions. The package contains the complete digital control panel and the antenna so you have everything needed to replace the original module.

• One digital control panel assembly (9904200043 compatible)
• One external antenna for wireless reception
• High-temperature resistant components for longer service life
• Backed by vendor customer support for installation questions

Who is this for: This COMVIEE Digital WiFi Controller is aimed at owners of Masterbuilt Gravity Series 800 smokers (MB20040122, MB20040221) who need a reliable replacement to restore smart control, accurate temperature regulation, and probe monitoring. It’s ideal for grillers who prefer fixing their existing smoker rather than replacing the whole unit and for anyone who values remote monitoring and consistent results during long smoking sessions.