CCD is a two-color CCD, a black-and-white CCD, so two CCD cameras into a shell inside. Color CCD work during the day, infrared lights are not working. evening, the photosensitive sensors to light resistance was low, will automatically switch circuits, infrared lights will be opened, color CCD closure of this group, this group of black-and-white CCD opened, black-and-white CCD image effects than turn black color CCD effect lot nicer.
Color CCD lowest illumination of 0.1 LUX, the most black-and-white CCD 0.0001LUX low light up.
General-CCD camera is also equipped with better use the special infrared cameras. infrared transmittance of the lens than ordinary lot nicer (10 times) ~

Special functions primarily reflects the effect on night vision ...
Two black-and-white color rotation work, some rest time, a lot of life president