An infrared security camera has built-in infrared LED lighting installed around the outside faceplate of the lens of the camera. This LED lighting will help the camera to capture a good image in no light situationl. With a little bit of light (called low light) the infrared camera can capture a picture. People use infrared security cameras for places that have the low light at night. Or for outside, night time monitoring. Keep in mind that even at nightime there is a normally some nature light from the moon, stars, or street lights. Infrared security cameras will produce a color image while the light is good. When it gets low light, the camera will automatically switch to infrared ON mode and turn on it's built-in infrared LEDs. In infrared mode the image is shown in black and white - this is same for all infrared cameras. The level of light for a good effect of the picture is referred to as a camera's lux value, the lower the lux value the better the camera can see in low light. For example a camera with 0.01 lux is better than a camera with 0.2 lux. Infrared cameras are considered to be 0.0 lux in infrared mode - in other words they can 'see' with no light at all. Infrared cameras are also devided by the effective Inrared detecting distance. This is generally a result of how many infrared LEDs are built into the camera. Our Long Range Color Day/Night Weatherproof IR Camera can see up to 100m/320ft. with no light at all!