Specification: Voltage:DC12V Max Working Current:2.5A Working Temperature:-20~65 Internal diameter of the plug: 2.1mm External diameter of the plug: 5.5mm Material:Plastic Feature: Simply & professional appearance for power cabling Easier for camera and LED light strip installation, save time and more safety cable connection No electrical tap, No splicing, no crimping, but only a small screw driver. Suitable for Single color LED strip such as 5050 3528 led strip, CCTV Camera installation, save time and more securer cable connection. Package Included: 20 x Male DC Plug Adapter