HQRP 10 Feet Extentions cable! This quality cable is fitted with a 2.1x5.5x10mm male plug ~ female socket. One end is male and other end is female! Works with anything that uses 2.1mm DC Plug End such as CCTV Product. This size is used on the majority of CCTV cameras! You can also use this cable to extend the DC power source on many other applications requiring a 2.1mm centre pin! You can link these together to make longer lengths if required! Also, compatible with: Q-See Security System Model QC824-4F1 / QC524-4E8 / QT534-2B5 / QC304-2H4 / QT534-2H4.