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12 of 13 people found the following review helpful
on November 27, 2012
A lot of 12 volt stuff seems to be using this size connector. I am using them to wire 12 volt DC LED fixtures. This is the male connector. The female is here:

CCTV Camera 2.1x5.5mm Female Power Adapter 10 Pcs

I find these connectors pair well with this wire:

DIY 18/2 100 Feet In Wall Speaker Wire Spool CL2 Rated UL Listed

Although its marketed as speaker wire, I find it ideal for 12 volt LED lighting wire.
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11 of 12 people found the following review helpful
on August 15, 2012
These terminal ends are exactly what I was in need of in order to make connections with small gauge wires going to D/C powered devices. I use them mainly for CCTV cameras and IR illuminators as well as various other gadgets that require an A/C adaptor. I am using a multi port power supply in order to do away with the multitude of adaptors that require a 120VAC outlet in order to get power.
These connectors are easy to use and they make a tight connection that doesn't easily pull out.
These connectors do not require wire nuts, solder, or any other additional electrical hardware.
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6 of 7 people found the following review helpful
on May 20, 2012
The price is great, and while these are often used for security camera power connections, they are also standard for a lot of Remote Control (R/C) First Person View (FPV) equipment.
i.e. often used for the ground station equipment running on 12V DC: remote video receivers, diversity equipment...
I find it particularly well adapted for that R/C usage as the length of the cables can vary quite a lot depending on the antennas position, and it's super fast to attach a cable to that connector.

I found the "+" marking to be connected to the center contact on the batch I received. As I wanted to make these center positive, that worked great.
In all cases, please check with a multi-meter to see what post connects to center, and what polarity your equipment requires. [measure twice, cut once would be more like measure twice, avoid smoking your electronic equipment).
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3 of 3 people found the following review helpful
on September 21, 2014
I was excited about these when I got them but after using a dozen or so, I'm not so happy with them. I use these mainly for CCTV installations when I run Siamese coaxial and power cables in tandem. The main problems is how the power wires are secured the connector. It relies on you tightening down a mini-screw to keep the wires in place. The problems arise when you manipulate the connector after it is installed. For example, trying to squeeze it into a weatherproof electrical box (connector can be bulky and the wires get bent in an awkward fashion. This leads to the cables shorting out....alot. I think this might work well in instances where you are coming straight into the connector without any sharp turns on the cable and then the cables are not moved again.

When you are doing installations for other people and a short can mean your reputation, you probably want to go with good old fashioned pig-tailed connectors that are soldered and shrink-tubed together.
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5 of 6 people found the following review helpful
on November 4, 2013
I have had a few of these that shorted out on me. Sure it was a pain when I found the first one during installation (out of the box as it were). But if that wasn't odd enough, I have had two more do this AFTER the system had been up for awhile (one 2 weeks after installation - and another, "3 months after" installation). They were simply shorted completely upon arriving onsite when servicing them.

In most applications this may merely take out the fuse for that given camera channel, but in my case I had an added problem where my 8 Amp PSU would shutdown the whole 8-channel board in the PSU - bringing down all cameras!

Worried this may happen again at any time for all I know. I'm disappointed. Makes my camera product look bad. Others here have commented that they had issues with these too - but didn't say how they were bad really - perhaps it was a bad production - a batch that went out by mistake only???

I can only tell you my situation... a complete short of the terminals, with zero Ohms still today - when testing them after I had replaced them.
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2 of 2 people found the following review helpful
These ten power Jacks all tested good out of the box with an ohmmeter. After you strip 1/4 inch of insulation off of the wire, you might want to tin the wires with solder, in order to ensure a stray strand of wire doesn't accidently short against the adjacent confuctor. A thin flat-blade (common) screwdriver secures the wire to the jack. There are small "plus and minus" signs to indicate where each wire goes. The plus sign terminal is connected to the center conductor. You have the ability to reverse polarity on this jack, so you might want to test your powered-up jack with a volt meter before applying it to your equipment.
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1 of 1 people found the following review helpful
on September 12, 2014
These work great, easy to use. The only problem I can find with these is actually the size of wiring your wanting to use on them, if its smaller then 14-16, it might not stay in or catch at all. I got some led lights to use with this item and I think I have to solder some 14 gauge wire on them just to connect to these.

Other then that perfect for 5amp per hour max 12volt usage.
These work great with the (HitLights 5-24V Easy Plug Dimmer for Single-Color LED Strip Light, 2A Max) Dimmer switch.

These work a bit differently then the female ones for the dimmer switch, you have to push them up into the plastic tubing for the dimmer. It does stretch the tubing for a full flush. While the female adapters work perfectly without problems.
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1 of 1 people found the following review helpful
on May 7, 2014
I needs male DC power jack adapters to hook up a 12V battery Adapter (8x 1.5v AA batteries in Series) to power my 3528 LED strip.

Worked like a charm.

The screw down screws were a bit tricky to use as I was slipping in 22 gauge wire and had to fold the ends to make it thicker so the Screw can hold the wire down.

The screw when "screwed" pushes down a metal sheet inside that clips or bites the wire.

THere are + and - signs on top to indicate the HOT and neutral wire for insertion.

Bag came with 10 pcs, I have tried 2 and both worked fine.
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1 of 1 people found the following review helpful
on November 9, 2013
For years, I'd been splicing to the included wires. With this product, there's no splicing necessary! Just run a simple 16/2 wire and attach at both ends! Perfect! Makes for super easy PREwiring!
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1 of 1 people found the following review helpful
on February 6, 2014
Be happy you are getting 10 of these because in my batch 3 were no good. Be sure to check them out with a multimeter. Plus the eyelets are sometime too small and you can't get the wire in easily.
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