Liwinting 2pcs 5m/16.4ft DC Extension Cable 2.1mm / 5.5mm Male to Female Connector, DC Power Cord Extension Cable for Power Adapter, 12V CCTV Wireless IP Camera, Monitors, Led, Car - White Connectors - Female: 2.1mm x 5.5mm jack. Male: 2.1mm x 5.5mm plug. Recommended for DC up to 36 volt, Max load 3 amp or less. This cable will only work with power adapter with 2.1mm x 5.5mm plug and not other sizes. Widely used in surveillance cameras, especially for for Home Security Camera Surveillance System, routers, LED light bar and other low-voltage DC electrical equipment,Car / CCTV Equipment. Package list: 2 x 5m White DC Extension Cable.