Most CCTV cameras require a 12V DC power supply in order to function. All cameras require power in some form. To supply the 12V DC power, a correctly specified power supply is required
895-18-PA107

895-18-PA107

A basic, 12V 5A power supply

895-18-VS2009

895-18-VS2009

This is a 9 way, 5Amp power supply in a steel box. The 9 outputs are individually fused to protect the power supply and other equipment from overloading problems.