Infrared security cameras are very popular because their low price and their ability to view in total darkness 0 lux. Most infrared security cameras are water and weather proof and can be used inside or out. The infrared security cameras have infrared lighting installed at the outer edge around the lens.

An infrared security camera has infrared lighting Led intalled around the outside of the lens of the camera. This infrared light cannot be seen by human eye allows the camera to capture a good image in no light at all. The infrared sensor can see the infrared spectrum and provide us a picture which cannot be seen by a human eye, the infrared security camera can capture a picture that looks just like daytime. We use infrared security cameras for environment that have very low light or no light during night time or underground shelters.

Infrared cameras are often called "Night Vision" cameras from the ability to see at night. A common problem with infrared cameras is that they do not function in outdoor housings or indoor when the are pointing on windows or white wall because the infrared light reflects off the glass of the housing or the wall and create glare on the picture. An alternative option to infrared security camera is to use a day / night camera which is light sensitive imaging chip that allows it to produce quality picture in low light conditions. Day night camera can replace infrared camera only in low light condition (Low Lux) but the cannot work in total darkness (0 lux) like infrared camera.