# Internal / External RF

The configuration settings for both the Internal and External RF pages work the same. The only difference is that the **Internal RF** section is for configuring the built-in module and the **External RF** section is for configuring an RF module in the external module bay.

The Internal / External RF modules are "active" for a model when the buttons are yellow and inactive when they are white.

<div><figure><img src="https://4127893330-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FG9cXG2SsywqpT8oP5rLH%2Fuploads%2FShRR04gBZyIAopzgoe8L%2Finternalrf2.jpg?alt=media&#x26;token=9abb2af0-46d6-45e9-90f8-f8c063e35ad6" alt=""><figcaption><p>Internal RF with multi-protocol module selected</p></figcaption></figure> <figure><img src="https://4127893330-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FG9cXG2SsywqpT8oP5rLH%2Fuploads%2Fh39QmAVGy5RJ5igihT7r%2Finternalrf1.jpg?alt=media&#x26;token=1d065e0c-ef8f-4325-830c-146789115039" alt=""><figcaption><p>Internal RF with CRSF selected</p></figcaption></figure></div>

The configuration options are: ***off*** or the ***module name*** of the installed module as configured in the [*hardware*](https://manual.edgetx.org/v2.8/edgetx-user-manual/user-manual-for-color-screen-radios/radio-settings/hardware) section of the ***Radio*** settings. Configuration options are unique to each installed module. Please consult the manufacturer's documentation for configuration options.&#x20;

{% hint style="info" %}
Configuration options for the multi-protocol module are described here:  <https://www.multi-module.org/using-the-module/protocol-options>
{% endhint %}

#### Receiver number

The receiver number is a user-assigned number for a model that is sent to the receiver when bound. Each model must have a unique receiver number. However, models using different protocols may have the same receiver number without issues.  EdgeTX will inform you when a receiver number is unique or if it is already being used with a text above the number field.

{% hint style="info" %}
If using the radio in gamepad mode, both internal and external RF modules should be turned off. This will result in increased performance when connected to a computer via USB.&#x20;
{% endhint %}