DC Power Jack.

100% and high quality 2.1 x 5.5mm CCTV Camera DC Power Plug Connector No electrical tap, No splicing, no crimping, but only a small screw driver DC Power Plug with plastic construction and strain relief Used For: Single color LED strip such as 5050 3528 5630 led strip, interchanger, CCTV Camera ect Internal diameter of the plug: 2.1mm External diameter of the plug: 5.5mm Dimension: Approx. 39 x 13 x 12mm/ 1.54 x 0.51 x 0.47inch Voltage range: 5V-42V Color: Black, Green