The CCTV monitors with Middle Screen Size are of widely use. There are 8 inch, 8.4 inch, 9 inch, 9.2 inch, 10.4 inch, 11 inch, 12 inch, and 15 inch monitors. They are LCD monitors, some are with VGA interface which can be used for computer displaying while some support 2 channel video input. Most of the middle screen monitors are suitable for car surveillance system.