DC Barrel Jack ( female) is a 5.5×2.1mm center-positive Male barrel jack connector.
You can use it when you want a DC power connector that runs off a battery pack or wired power supply.
It have a screw terminal block on the other. The terminals are labeled with positive/negative.
So you can hook up your selected power supply to the terminal points and you have DC power Plug with the output of your choice.
You can then fit a female 2.1mm DC barrel jack to your circuit, motor, breadboards, etc. for easy, variable power application.
Connector : 5.5×2.1mm Female barrel jack.
Terminal Labelled Positive/Negative.
- Compatible with many DC wall power supplies.