General description 5.5mm x 2.1mm Male and Female Power Jack Connectors are designed for professional use with CCTV cameras and LED DVR security systems. These connectors feature screw terminals for quick and easy installation, making them ideal for installers. Technical specifications Connector type: 5.5mm x 2.1mm Male and Female Package content: 5 pairs of DC Power Jack Adapter Male and Female Connectors Installation Screw terminals for quick and easy installation Polarity marked connections for correct wiring