> 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="/files/ppABN2eI8RFBkpi7XaCs" 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.