Volt Amp Adjustment Input Voltage can be 110V or 220V. Wide adjustable output Voltage range: DC 0-48V. This supply is suitable for 5V 9V 12V 24V 30V 36V 48Vdevices. The voltage precision is 0.1V. NoteThe maximum current is 10A. But the ouput current can be adjusted by the potentiometer. No matter how many voltage is adjusted, the max current should not be higher than 10A. It can be used to device of 2A 3A 5A 10A. Make sure to use the devices which is below 10A. Hareware This Buck Converter is equipped with LED screen, heat sink and cooling fan. The LED screen can clearly display the output voltage and output current. Heat sink and cooling fan can control the temperature in a safe range. During the running power is high, the cooling fan will automatically activate with little noise. Easy Operation This supply is no need to install, after connecting wire, it can be used to adjust output, which is convenient. The potentiometer is inset into the supply. Only to rotate the pote