> For the complete documentation index, see [llms.txt](https://docs.adti.camera/adti-20l-and-24l-v1-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-20l-and-24l-v1-quick-start-guide/connect-the-camera-trigger.md).
# Connect the Camera Trigger
There is a Replay -to-PWM module in the camera box, It is used to convert Relay (TTL) to PWM triggering. (see below photo)
WITHOUT the Replay -to-PWM module, if user connect the shutter and GND ports directly to flight controller, then it is Relay (TTL) triggering.
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