6V 2A Power Adapter: AC input: 100V-240V. DC output: 6V-2A. 12 Watt( Max). DC plug connector size: 5.5x2.5mm. Polarity: Center Positive (+). Extension cable: 3 ft. Safety Performance: 6V 2A IC chip motherboard solutions; set signal interference protection, over-current protection, short-circuit protection, overload protection.