Congratulations on your purchase of this PRO-530 indoor/outdoor day & night CCTV camera from Swann. The PRO-530 is a color CMOS camera that can operate in almost all lighting conditions, from bright daylight (provided it's not pointed straight toward the sun!) to pitch darkness.
The PRO-530 is very sensitive to light and therefore can make use of even the smallest amount of light to provide an image of what it sees. In low light, this comes through as a black and white image.
In complete or near-total darkness, the camera uses built-in infrared LEDs to illuminate the area in front of it. This light is invisible to the human eye, although you might notice a faint red glow coming from the front of the camera - this is normal.
In day or well lit environments, the IR Cut Filter feature of the camera activates to filter out wavelengths of light the camera does not need in order to provide a clear color image.