Item :LCD can display input/output voltage, output current/output power/output capacity/output time; CNC adjustment, accurate and fast, can lower voltage, output voltage can be adjusted at will from , limit current 0-20.00a can be adjusted at will; the output end is poured backward without burning; The module can be set to open/close by default; Multiple software protection mechanisms are available, and the protection threshold is adjustable.When the working parameters of the module exceed the protection threshold, the output will be automatically closed. Using synchronous rectification technology, the conversion efficiency is high: the efficiency is more than 90%. Increase heat sink, install fan, strengthen heat dissipation. The module input positive in + and negative in - must not be reversed, and the module input in - must not be short circuited with the output out -, otherwise the module may be burnt out. Please that the power moment of the power supply exceeds the required power of the output load This module is a step-down module, the input voltage should be higher than the output voltage, and a certain margin should be reserved. For full load output, the input voltage should be 55v. High power use of this module, serious heating, high temperature, be careful of scald Please pay attention to ventilation and heat dissipation when using high power for a long time The module has input undervoltage protection function. The default value is about 5.8v (can be set). When the value is lower than this value, the output will be automatically disconnected (note that the voltage at the module port is lower than the undervoltage protection threshold. When the input current is relatively , do not ignore the partial voltage on the input wire). colour:blue material:plastic size:79 x43 x 42mm Package Contents: 1 Module Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.