Input: 110V-220V 50/60Hz; Output: 5V DC up to 60 Amps Max; The output voltage can be regulated by ±10%, from 4.5V to 5.5V, Works with device that draws less than 60A, such as DC5V1A~60A..The default input voltage is 220V, 110V/220V must be selected by switch before using to avoid damaging. Please replace the switch with the voltage appropriate for your project. High-quality raw materials, porous metal shell, good heat dissipation performance, small size, strong performance stability, only support indoor use..Make sure your device match the 5V voltage and wattage less than 300W. Please don't run it overload .The max use should be no more than 80% of the full loads,otherwise, It's cause the power supply to overheat,the service life of the power supply will be greatly shortened.We recommend you to use this 5V60A 300W power supply to power devices less than 240W..Safety features: Automatic overload cut-off, over Voltage cut-off, automatic thermal cut-off, short circuit protection. Enough 300W output power and 5V stable output voltage will protect your electronic products from destruction..It is perfect for all 5V projects, such as WS2812B / WS2812B ECO / WS2811 / SK6812RGB / SK6812RGBW / WS2813 / SK9822 LED Strip / LED Pixel LED Matrix / LED String / LED fairy string / LED Matrix / CCTV Camera / Security System / Computer Project, etc.