Top positive review
One person found this helpful
Does the job. Well made and cost effective - but note comments
on 23 April 2013
Note that the 2.1 mm refers to the INTERNAL bore size of the male plug.
I bought one of these to extend the annoyingly short DC power lead provided with an IP camera that I was installing some way from the nearest mains supply. It did the job well and seems well enough made for an inside installation, though I wouldn't use it outdoors as it would not be weather proof.
Be aware though, that as the cross section of the cable is relatively small, there will be a voltage drop along the 5metre length. Not a problem with the 12v power supply I was using it with, but when I tried it with another device running off only 5v, the voltage drop was sufficient to cause this kit not to function.