This matches a 5 inch suction mount digital wireless monitor with built in receiver with our CAM104 reversing camera with separate transmitter box. The monitor can either be hard wired in or run off a cigarette lighter plug. The second option is useful for those caravan or trailer owners who will want to remove it from the vehicle when not towing. The CAM104 is a very reliable reversing camera. It has a 150 degree viewing angle and a composite glass lens. This lens is designed to reduce the "fish eye" effect you can get with wide angled cameras. Due to its wide viewing angle you can often see further back down the road as well as close to the vehicle. Any view down the road will make objects close in look much further away.