I'd like to ask if it's safe to use a PSU to just power CCTV Cameras and recorder (which uses 12v) without using a computer. (are there things i should watch out if i do this like using dummy ...

The 12V 2A Power supply unit is available in either a plastic or metal cabinet. The cabinet can house both the 12V 2A PSU and a Net2 or I/O ACU with the option to accomodate a 12V/7Ah back up battery ...