12V DC Male Female Solderless Terminal Adapter LED Strip CCTV Camera Accessories

Male Plug :

5.5mm 2.1mm male  DC Power Plug

Size: inner dia:2.1mm, out dia:5.5mm

Dimensions (LxWxH):  41 x 18 x 15 mm

Female plug :

DC 2.1 (inside) x 5.5 (outside) mm female

Dimensions (LxWxH):  27 x 18 x 15 mm

This DC to Terminal Block adapter is made for many  application e.g. for connecting single wires with open cable heads. It also can be used in the hobby area for example for model railroading. 

So you can connect various devices with suitable DC power connector to the adapter in order to supply your devices individually with power (depending on the requirements of device).