Surveillance cameras differ in appearance, use and delivery method. External cameras able to withstand all types of weather, environmental and weather factors from extreme heat. Cameras installed in closed areas inside the buildings, PTZ mobile cameras operate in all directions left and right ,up and down you can work in all directions and upto 360 degree horizontally and 90 degree vertically, IP Network cameras which are the new type or new gen cameras. IP network cameras are directly connected to internet router and transmit data over internet. They are connected with display and recording devices and they are also infrared cameras that are intended for night surveillance.