9V 1A AC/DC Power Adapter 5.5 x 2.1mm Center-Positive US Plug

Regulated 9
V DC Output: Converts 100240 V AC 50/60 Hz input to regulated 9 V DC output up to 1 A for compatible controller boards and low-voltage electronicsWide-Range
AC Input: Supports 100240 V AC 50/60 Hz mains input with a US Type A wall plug; the connected device draws only the current it requires up to the adapter's 1 A ratingCheck Four
Specs Before Connecting: Your device must require 9 V DC draw no more than 1 A use center-positive polarity and accept the specified barrel connector; matching voltage alone is not sufficientDoes
Not Fit Center-Negative Devices: Effects Pedals Drum DJ controller Piano keyboards Label makers and other equipment with power ports of negative-tip. Not applicable for devices that withstand minimal electromagnetic interference such as radio set.
For Compatible Controller Projects: Suitable for compatible UNO R3 and MEGA 2560 boards with the correct DC jack giving bench projects a dedicated power source without occupying a computer USB port