The PRO I/O AUX / RS232 CABLE (6’) connects to the 10-pin AUX port on the PRO I/O module, allowing you to interface with a variety of 3rd party GPIO and RS232 control devices.
Do not attempt to create a custom cable without carefully reading the Pin-Out section of the camera Operations Guide. Soldering may be required to connect with 3rd party GPIO and RS232 control devices.