> For the complete documentation index, see [llms.txt](https://docs.adti.camera/adti-24s-v3-quick-start-guide/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.adti.camera/adti-24s-v3-quick-start-guide/connect-the-camera-trigger.md).

# Connect the Camera Trigger

The 24S V3 camera has relay trigger to PWM switch, so the triggering method can be switched from either TTL (relay) or PWM.

There is a Replay -to-PWM swich is on the back of the 24S V3 camera as following photo shows:

the switch on upper position is for PWM, and it on bottom position is for Relay (TTL)

<figure><img src="https://1091689999-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F0xcA1VK6BwwrvKyzUowY%2Fuploads%2FpOnlSO47WCbaGXIdneJM%2F92ba9e0c8e35062132a3857bba69087.jpg?alt=media&amp;token=cb26077d-f270-482a-b1cb-544a66a39948" alt="" width="188"><figcaption></figcaption></figure>

<figure><img src="https://1091689999-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F0xcA1VK6BwwrvKyzUowY%2Fuploads%2F1h01A6DDnUAUHf0jwwfX%2F177c9c8f72570dfcb35f850eff551d7%20-%20%E5%89%AF%E6%9C%AC.png?alt=media&amp;token=c1b504e7-8644-4b20-ba77-2dc3bc410b26" alt="" width="563"><figcaption></figcaption></figure>