Cinolink 9V1A UL/FC Certified, Power Adapter for Arduino, AC DC 9V 1A, 100V-240V, Supply 5.5/2.1Mm Plug US, 160Cm Cable, 9V 1A - 1000Mah 9V 1A power adapter for Arduino 2-flat-pin plug Input: 100~240v, 50/60hz, output: DC 9V, 1A, center pin is positive UL certified, UL certificate number: E31. 45. 3kzs