brand new and high quality Features:LCD can display input/output voltage, output current/output power/output capacity/output for time.CNC adjustment, precise and fast, step-down output, output voltage 0-50.00V arbitrary adjustment, limit current 0-20.00A arbitrary adjustment.Anti-reverse connection for protection of input end, which will not burn out.The module can be set to open/close by default.Multiple software for protection mechanisms are available, and the for protection threshold is adjustable. When the working parameters of the module exceed the for protection threshold, the output is automatically turned off.Using synchronous rectification technology, the conversion efficiency is high, the efficiency is more than 90%.Increase heat sink, install fan, strengthen heat dissipation.Cautions:Module input positive electrode IN+ and negative electrode IN- are forbidden to connect inversely, short connection between input IN- and output OUT- of the module is forbidden, otherwise the module may burn out.Please ensure that the power of the power supply is for always greater than the power required by the output load!This module is a step-down module, the input voltage is higher than the output voltage, and a certain margin is left. If you want to output at full load, the input voltage should be above 55V.The high power use of this module is very hot, high temperature. Be careful of scald! Please pay attention to ventilation and heat dissipation when using for a long for time with high power!The module has input undervoltage for protection function, the default is about 5.8V (can be set), when below this value, it will automatically disconnect the output (note that the voltage at the module port is lower than the undervoltage for protection threshold, when the input current is relatively large , do not ignore the partial voltage on the input wire). Specifications:Display: LCD displayInput voltage range: 6-55.00VInput voltage resolution: 0.01VOutput voltage range: 0-50.00VOutput voltage resolution: 0.01VOutput current range: 0-20.00AOutput current resolution: 0.01AOutput power range: 0-1000WInput voltage accuracy: (1%+5 digits)Output voltage accuracy: (0.3%+5 digits)Output current accuracy: (0.5%+5 digits)Typical output ripple: 150mV peak-to-peakCapacity measurement range: 0-999.9AHStatistical error of capacity energy: 2%Statistical for time range: 0-100 hoursStep-down working mode: differential pressure>0.05%+1VSoft start: yesfor Protection mechanism: YesInput undervoltage for protection (5.8-50V adjustable, default 5.8V)Output overvoltage for protection (0-51.00V adjustable, default 51V)Output overcurrent for protection (0-20.10A adjustable, default 20.10A)Time-out for protection (adjustable from 0-100h, closed by default)Over-capacity for protection (0-999.9Ah adjustable, closed by default)Material: ABSPanel Size: app.79x43x42mm/3.11x1.69x1.65inColor: As pictures shownQuantity: 1set Note:Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes:1 x Panel1 x Motherboard2 x Connection Lines(other accessories demo in the picture is not included.)