Feature the latest in Analog HD technology View 1, 2, 3 or 4 cameras at the same time LED backlit Compatible with NTSC or PAL cameras, simultaneously Compatible with AHD or CVBS cameras, simultaneously Advanced LCD technology allows you to clearly see your image from any angle Mirror the view of any of your cameras for use as a backup camera 2 Year Warranty 16:9 aspect ratio 4 Camera Inputs Available in 9in size Event triggers for each camera allow for triggered events to bring your camera to full view (IE: putting the vehicle in reverse) Color, brightness, contrast, and volume controls that allow compensation for use in different environments Remote control, sun shield, and metal U-bracket monitor stand included