Axis Camera I/O Connector & Arduino

Need help with wiring and understanding this. How can the Axis Camera I/O interface with Ardunio GPIO
Here are some screenshots

What are you trying to accomplish?

Pin 3 is a camera input so it should be connected to an Arduino pin that is an output. When you drive the pin LOW, it activates the camera.

Pin 4 is a camera output so it should be connected to an Arduino pin that is an input, specifically configured as INTPUT_PULLUP so it will be HIGH when the camera is not active and LOW when it is active.