Surveillance cameras can be classified as indoor and outdoor models according to installation place. The main difference between two models is whether the camera is weather-proof or not. That is, outdoor camera does completely protect the inner material from weather like wind, rain, moisture, dust, snow, and humidity. Some outdoor cameras should have heater or blowers for temperature resistance. On the other hand, indoor cameras do not require weather-proof or temperature resistance except critical places which get high humidity or high/low temperature.

In addition, outdoor cameras require infrared or TDN (true day/night) technology more than indoor cameras for night vision capability.