4 channel duplex box for reversing cameras

This is a duplex box that allows 4 reversing cameras to be used with a standard monitor to produce a split screen image. It can show each camera individually using the press buttons on the front of the box. It is suitable for use in 12v or 24v vehicles and takes cameras that use the aviation style 4 pin connectors. The box is supllied with a short 4 pin female to female lead to connect to one channel of a standard monitor.