Product: 4pcs/pack1m/3.28ft Black 5.5mm x 2.5mm DC Plug Extension Cable DC Extension Cable Cord with Male to Female 5.5mm x 2.5mm Connectors DC Power 12V 5.5mm x 2.5mm Barrel Male Plug Connector
Brand: HUALAND

Product Features: 
5.5mm X 2.5mm DC plug extension cable allows flexible option for setting up electronic device such as CCTV camera, printers, LED lamps and signage, sensors, anything that requires DC input and accept 5.5mm x 2.5mm plug, where wall outlet may be out of reach. Comes with female jack at one and a male plug on the other to extend the reach of DC power supply. This unit only accepts 5.5mm x 2.5mm barrel plug from power adapter and will not work with other sizes. 
Note: The surest way to determine if this cable is compatible with your power adapter is by measuring the inner diameter and outer diameter of the plug of the power adapter. 
Package Includes: 
4 x1m DC extension cable. Lack of Power - The longer the cable, the more resistance and power loss, and hence requires more power from power supply. Most commercial products do not provide a strong power adapter. At 16ft length, the power loss is noticeable. Please make sure you have adequate power supply to use extension cable Make sure that the power adapter can supply enough power over the extension cable. From 16ft and up the resistance and the drop off in power may become noticeable. 
DC barrel plug and receptacle dimensions: 5.5 mm x 2.5mm DC Plug Extension Cable, Male 5.5mm x 2.5mm connector on one end; female 5.5mm x 2.5mm connector on other end，Length: 100 cm/3.28 ft，22 AWG
Female connector: accepts 5.5mm x 2.5mm barrel plug
Male DC Plug: 2.5mm inner dia. x 5.5mm outer dia. barrel plug
Recommended for DC 3volt to 24volt, Max load 3amp or less
This cable will only work with power adapter with 5.5mm x 2.5mm plug and not other sizes

Search query: 2.5mm male to female extension cable
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