5 pin Aopulo trailer socket to 4 pin male for use on the vanside of a caravan cabling system for a rear camera setup.

This has a metal body with weatherproof cover which snaps closed when not in use and is combined with the CCB curly cable to provide a robust but flexible connection between the car and van.
Where a small, 4 pin cable is used these are easily damaged by pulling on the cable whereas the Aopulo plug system has substantial, metal parts with a keyed body to prevent incorrect insertion. All parts are large enough to grip firmly and will not be filled with dirt and water when not in use.

The male 4 Pin suits the female end of standard extension cables and would typically be close to the hitch on the van, normally a 15m cable will be required to get from here to the back wall where the camera will be mounted.
This 5 Pin socket is the same as the full length caravan cables and is mounted using the CH-MB bracket.