In-line power switch for 2.1mm barrel jack Prok Add a power switch to any project simply by plugging this between the power supply.
Switching Power Supply 12V 3A
Switching Power Supply 12V 2A White
Switching Power Supply 12V 1A Ideal for supplying your Arduino Board!
Adafruit PowerBoost 500 Shield - Rechargeable 5V Power Shield What's a project if it's trapped on your desk? Now you can take your Arduino anywhere you wish with the PowerBoost shield!
USB Current Voltage Detector Small size, simple and practical tool that can detect USB's voltage and current.
9V battery holder with switch & 5.5mm/2.1mm plug This is a 9V battery pack with on/off switch and a pre-attached 5.5mm/2.1mm barrel plug.
5200mAh Li-Ion Rechargeable Power Bank Carry the power bank on the move. Never worry running out of power.
2200mAh Li-Ion Rechargeable Power Bank Carry the power bank on the move. Never worry running out of power.
2.1mm Male DC Barrel Plug to Alligator Clips Turn any battery pack into a power supply with this incredibly useful adapter.
2.1mm Female DC Barrel Jack to Alligator Clips Turn a wall adapter into a mini power supply with this incredibly useful adapter.
4-Way 2.1mm DC Barrel Jack Splitter Quadruple your power adapters with this wonderfully simple 4-way power jack splitter.