The type of camera audio input and output interface is related to the shape of the camera. Generally, there are four types:
Box camera
The box camera is generally equipped with a standard 3.5mm headphone jack.
Bullet camera
The bullet camera generally uses this interface, and is also a standard 3.5mm headphone jack.
Dome camera
The audio input and output of the camera that is generally tested is only bare wire, and the interface is not connected.
There is a label on the bare wire that indicates the color of the audio input, audio output, and ground wire.
Other: Unknown interface
Different manufacturers have different routines, you may encounter such an interface.
