> For the complete documentation index, see [llms.txt](https://www.multi-module.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://www.multi-module.org/advanced-topics/protocol-dumping.md).

# Protocol Dumping

Protocol Dumping is a way to capture and decode RF transmissions from a transmitter and receiver by using a radio with a MULTI-Module as a 'packet sniffer' - the radio doing the dumping listens for radio transmissions, captures them, decodes them if possible, and displays the result via a serial connection with a computer.

Doing this allows new protocols to be captured, decoded, and then ultimately added to the MULTI-Module.

{% hint style="info" %}
Protocol Dumping only works for protocols using an XN297L RF module, which has become common in many small models, and is only practical with external MULTI-Modules.
{% endhint %}

If you wish to use this feature to capture a new protocol, please contact the MULTI-Module developers via the RC Groups forum.

You will need to be familiar with the Serial Debugging process, and know how to update the firmware on your MULTI-Module.