Versatile PP3 adaptor, plug a 9V battery into one end and connect the other end to anything with a 2.1mm, centre-positive barrel jack.
A PP3 to 2.1mm centre-positive barrel jack DC connector, useful for connecting a 9V battery, or any of our battery cages with clip, to projects such as an Arduino.
Also you can use as Arduino power supply with 9V battery
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