Universal Input: 100-240V AC; Output: 12V DC 41.6A Suggestion: The power used should not exceed 80% of the power of the led switching power supply 12v dc led power supply widely used in Industrial automation, LED display, Computer Project, LED Strip Lights, etc. Circuit Short Protection, Overload Protection and Over Voltage Protection Ensures the Safety of Using This Power Supply Metal Enclosed Body is good for Heat Dissipation which Can Prolong the Lifespan of the 12 volt led Power Supply Dual input voltage: AC 110V/220V. There is a switch, choose the proper voltage before use. Please set the switch to 110V for USA.