Wsdcam 100 Pairs Male & Female DC Pigtail Power Connectors for CCTV Surveillance Camera Video System(2.1mm x 5.5 mm) Provides a simple DIY solution for DC power connectivity, work with a power adapter or a power supply box 200 Pack male/ female DC pigtails with 10 feet Red & Black wire jackets indicate polarity Heavy-duty quality with 18 x 0.12mm copper wire brings the reliable and secure connection Compatible with all CCTV systems and other DC power devices 7/24 Service: 365 days Technical support from Wsdcam engineering