> For the complete documentation index, see [llms.txt](https://docs.pinescriptstrategy.com/tools/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.pinescriptstrategy.com/tools/settings/signal-detection.md).

# Signal Detection

<figure><img src="https://632862962-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FWkrLZce4Nzr4t9QVs8pP%2Fuploads%2FGAWKeLyCRNuLVFVPM1TS%2FScreenshot%202023-04-08%20at%2011.08.23%20AM.png?alt=media&amp;token=325d0c5d-3cf7-41d5-b9fc-1f6273d07b9d" alt=""><figcaption><p>PSStrategyX v1.0.0 Settings Group "Signal Detection"</p></figcaption></figure>

This is where you insert your external signals and indicators.

* Only one signal can be selected
* Signal sources will be used for  buys, sells, and exits within the backtester.
* It's possible to reverse the direction of the signals, or only take long trades and vise versa.