hd4dThe HD4D is a surveillance solution desned for object recognition in locations where low or variable lht conditions exist. Setup is quick and easy and can be customized with userA True DayNht camera that switches from color to black and white mode based on available lht, the HD4D uses a removable infrared (IR) cut filter in color mode and an optical low-pass filter (OLPF) in black and white mode to ensure