Dash-mounted monitors for reversing and commercial camera systems, in 5, 7 and 9 inch sizes. These mount on or in the dash rather than clipping to the rear-view mirror, which gives a larger, clearer picture and suits vehicles where mirror mounting is not practical.
Three-camera-input models suit a rear camera plus one or two side cameras. Quad monitors in 7 and 9 inch take four cameras and display them simultaneously, which is what you want on a truck, bus or large van where you are covering rear and both blind spots at once. There is also a 5 inch pedestal monitor for a simple dash-top mount.
Most of the range is AHD at 1080p. AHD monitors need AHD cameras to get the full resolution, so match the two if you are building a system from scratch.