Item Descriptions:-Input Voltage: The output voltage ranging is AC 5-30V DC 5-48V, since the AC voltage fluctuates greatly, the recommended input voltage is AC5VAC24V or DC5V-40V.-Output Voltage: The output voltage can be adjusted, ranging from 3.3v to 33V, the output voltage varies with different input voltage ranges.-High Current: AC/DC to DC buck step-down converter module with external heat sink can withstand high current operation, the output current can work stably at an output current of 2.2A for a long time and can work at an output current of 3A for a short time.-High Voltage: The power module uses plug-in version LM2596HV, for high voltage, the highest input voltage is 40V (limited by the filter capacitor voltage).-Note: When soldering leads, please recognize the name of the silk screen terminal before soldering to prevent damage.Package:2x AC/DC to DC Step-Down ConvertersItem Specifications:Part Number:LM2596HVItem Weight:48 GramsProduct Dimensions:5.1x2.6cm (LxW)Input Voltage Eange:AC 5V-30V or DC 5V-50VOutput Voltage Range:DC 3.3V-33VOutput Current Range:2.2A Maximum