FireKingdom 2Pcs 2.1x5.5mm DC Power Plug to 9V CCTV Camera Battery Clip Button Connector Adapter Compact and portable design Equipped with DC 2.1mm plug It is very convenient for you to power your CCTV surveillance camera or mini camera timely 2 x 9v Spy CCTV Camera Battery Clip Adaptor w 2.1mm DC Plug