DaierTek DC Jack 5.5x2.1MM Pre-Wired Female DC Power Jack Panel Mount Barrel Jack with 5.5 x 2.1 MM Male DC Connector Plug Waterproof Cover for Audio Video CCTV DIY Appliances -6Pcs

Excellent product, very good value for the money. Mine was opened already and 3 of the green plugs were missing, so l assume it was a sneaky return and restock item, but that's not the sellers fault and doesn't change the fact these are great. Amazon is terrible about return items that way sometimes. I only needed three of the 6 pairs anyways, so it's fine by me this time. Great item, good quality, fast shipping. Bang for buck exactly as expected.

I purchased these barrel jacks to use with my power adapter. They did not come with a wiring diagram, and I guessed wrong the first time - purely user error. As soon as I changed the wires, the jack worked exactly as expected. They were resilient to heat (while soldering). These barrel jacks were even packaged in a small plastic box to help with organization.

A nice set. The sockets with the protective cover are easy to work with and the plugs are good quality too. Nice to have both plugs and sockets in a single package.

Simple and do the job. The only thing you have to worry about is overtightening the nut on the backside and stripping the plastic threads. Other than that, these work great.

Great product but the photo is incorrect. The jack itself has no "+/-" polarity. The polarity of the jack is determined by what kind of adapter you plug into it. Adapters can be center pin negative or center pin positive.The large (left) lug is connected to the center pin.The outer (right) lug is connected the side (sleeve) contact in the jack, and to the middle contact when no jack is plugged in.The middle (bottom) lug is switched. If nothing is plugged into the DC jack it is connected to the outer (right) lug. If DC power is plugged into the jack it turns off. This is useful for things that can operate on battery power or an adapter, such as a guitar pedal. When a DC jack is plugged in, the switched lug turns off so you don't send power to the battery or leave the battery clip powered when there is no battery installed.The 1st photo of the lugs is correctly labeled. The 2nd photo shows that with DC power plugged in the outer lug has power. The 3rd photo shows that with DC power plugged in the switched middle lug is off. You can verify all of this with a multimeter as shown.

The only problem i have with these is that they’re hard to tighten without stripping the plastic threads. That also makes them annoying to install. This matters to me because i often build point to point power filtering off the lugs and I cant have them loose and free to move around. Otherwise, I've never had a problem. The addition of tooth washers may help prevent this issue. I will likely be shopping for something more rigid.

Made good

Bought for project and worked well it cleaned up the build visually.

La verdad es que se sienten y se ven de buena calidad, llegaron la cantidad de piezas indicada, no le veo algún pero.Excelente producto, ya solo falta instalarlos en algún pedal de guitarra

I’ve found these to be the best style and construction of barrel connectors.The metal body of the jack provides a good, solid mechanical anchoring point while also allowing maximum current and thermal mass for higher power applications.The screw terminal plugs are well built and convenient, especially for quick connections to power test circuits.I’ve had issues with poor fit in other brands, but these seem to be manufactured to the correct barrel/pin size and specifications.I would prefer the jacks to come with bare solder joints rather than pigtail leads, but the wire provided is decent enough.

Nice package. Good firm plug fit in the socket. Useful screw terminal connections for the plug. Generous threaded length for installation through thicker panels. Enough in the pack for a bunch of projects!

Todo llego bien, se ven de buena calidad, es para conector corto, si es muy largo, no entrará todo.

Overall decent quality, works great but not happy about the weak material on the female connector, was trying to tighten one down on a build i was working on and it kind of mangled the alloy, still works perfectly fine and the only reason im docking a star.