This DC Converter adaptor allows you to convert a DC jack socket that is a 3.5mm Mono to accept a 5.5mm x 2.1mm cable mounted jack from a power supply or AC to DC adaptor.
1st photograph shows the adaptor from both ends for display purposes only
So if you have a lead from a power adaptor that has a 5.5mm x 2.1mm power jack on the end and the socket you want to plug in to is a 3.5mm mono socket, this adaptor is what you need.
Some low powered devices such as small household appliances and tools, CCTV equipment, LED lights & solar powered water pumps are fitted with the 3.5mm mono socket more commonly used for audio use.T
Connector 1) 5.5mm outer 2.1mm inner diameter DC Power Jack Socket
To Connector 2) 3.5mm Jack Plug (Mono)
Plug adaptor configuration: Inner DC pin (2.1mm) to tip of 3.5mm jack connection (black band to tip)
Outer (5.5mm) DC connection to ground/base of jack (below black band).
Please ensure you are aware of the DC jack sizes you wish to convert from and to as there are various sizes. If you are unsure then please check with your manufacturer.