SMPS (Power Supply) : A power supply is an electronic device that supplies electric energy to an electrical load.

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.

A power supply box – which can be 12V DC or 24VAC.