AC / DC 5V 1A Power Adapter Center Positive analog microphone The stack-able wing design allows

The stack-able wing design allows you slip this under any shield and still get easy access to the "analog" & "digital" ports of the Arduino

transistors and other TO-220 packaged chips by clipping on a heat-sink

Output Voltage: 5 VDC / 20A

DC barrel jack

it will solve your problem perfectly

AC / DC 5V 1A Power Adapter Center Positive analog microphone The stack-able wing design allowsRegulated 5V 1A wall adapter for powering small projects, dev boards, and 5V gadgets. Switch mode (SMPS), so the output holds steady at 5V instead of drifting high like cheap unregulated bricks. Center positive 5. 5x2. 1mm barrel plug. Takes 100 240VAC in, so it runs fine on PH mains. Specs Output 5V DC, 1A (1000mA) Input 100 240VAC, 50 60Hz Type Switch mode (SMPS), regulated Connector 5. 5x2. 1mm barrel, center positive Check your device wants center