General description This 20m DC Power Extension Cable features a 1.3mm inner pin power jack with a 3.5mm outer diameter. It is designed to extend the length of cable between your standard definition bird box cameras and the power supply, allowing for greater reach in your garden. Technical specifications Length: 20m Inner pin diameter: 1.3mm Outer diameter: 3.5mm Compatibility and accessories Compatible with standard definition bird box cameras Not compatible with 12V devices