High quality switching 'wall wart' AC to DC 5V 1000mA wall power supply. These are switch mode power supplies which mean the output is regulated to 5V and the capable output current is (1A!). This supply (5V/1A) is also FCC/CE certified!
These will power most projects that don't require more than 1000mA of current. Center-positive 5.5x2.1mm barrel connector.
Works with 100-240VAC inputs.