DC Female Jack Adapter connectors,female & plugable power plug connector
2.1mm DC Female Power Jack Adapter Plug-in Power Connector

Application & Features:
2.1mm DC Jack Adaptor comes in 2 parts.
No More Cutting and soldering,but only a small screw driver
2.1mm DC Plug features a DC 2.1mm plug and connector with mark polarity.
Simply screw your figure 8 cable and just plug it in.
Professional for CCTV installers and excellent for all DC or AC cameras.
Internal diameter of the plug: 2.1mm
External diameter of the plug: 5.5mm