This is a 9V battery pack with on/off switch and a pre-attached 5.5mm/2.1mm barrel plug. Use this to battery-power your Arduino (or other electronic projects) - it's ready to go out of the box!
Battery & screw not included.
- 68mm x 33mm x 21mm ( 2.6in x 1.3in x 0.84in )
- Lead length: 12cm / 5in
- Weight: 22.1g