This jack is the most common size associated with DC wall-wart power supplies, and is compatible with the lower power wall-type supplies that we sell.
For information about sizes, polarity and choosing the right barrel-type connector, seeĀ All About DC Barrel Jacks/Plugs.
DC Power Jack, Barrel-type, 2.1mm – Panel Mount by Provide Your Own is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.