uxcell Power Converter Regulator DC24V(19V~35V) Step-Down to DC13.8V 15A 210W Waterproof Voltage Convert Transformer Waterproof IP68 Voltage Converter Regulator DC 24V to DC 13.8V 15A 210W. Protections: Over-load, Over-current, Over-temperature, Short-circuit, Over-voltage. Auto-recovery when device is back to normal operating; high transfer efficiency of 96% max.. Die-cast aluminum shell, anti-shock, and moisture-proof and has stronger durability.New and Old label is being changed, but the products are same. Note: It is recommended to use stable DC power for the input power supply If you use the pulsed DC power provided by the generator, please filter it with capacitor before connecting it to the converter. If you use solar panel to supply directly, please note that the open circuit voltage of the solar panel cannot exceed the maximum withstand voltage of the converter. The supply voltage should be within the rated voltage and always leave a certain margin.