A CCTV power supply box, also known as a power distribution box, allows surveillance system installers to easily manage the power to multiple CCTV cameras at a central point (usually at the location of the DVR). This allows your camera installation to be neater. For example, instead of having 8 individual transformers plugged into a power strip/electric surge protector, all of your camera power wires can neatly be run to a 9 port power supply box. We also have 4 port and 18 port models available.Power supply boxes are typically installed near your DVR. These boxes are very simple to install. Each camera's power cable simply screws into the power distribution block inside the box. The power supply box plugs into a standard power outlet. No electrician is required for installation. All of our boxes now use PTC auto reset fuses.