A. The LCD can display input/output voltage, output current/output power/output capacity/output time. B. It uses CNC adjustment, which is relatively precise and fast. It can reduce the voltage, and the output voltage can be adjusted freely. The current limit can be adjusted freely from 0 - 20.00A. C. Reverse connection of the output terminal will likely not burn out the module. D. The module can be set to default on/off. E. It has a variety of software protection mechanisms, and the protection functions can be adjusted. When the working parameters of the module reach the protection threshold, the output will likely be automatically shut down. F. It adopts synchronous rectification technology with relatively high conversion efficiency: the efficiency exceeds 90%. G. A heat sink is added and a fan is installed to enhance heat dissipation. H. The positive (+) and negative (-) input terminals of the module should not be reversed, and the negative input (in -) of the module should not be short - circuited with the negative output (out -), otherwise the module may be burned out. I. The instantaneous power of the power supply should not exceed the power required by the output load. J. This module is a step - down module. The input voltage should be higher than the output voltage, and a certain margin should be reserved. When the output is at full load, the input voltage should be 55V. K. The module will generate a considerable amount of heat and reach a relatively high temperature when in use. Be careful of possible scalding. L. Pay attention to ventilation and heat dissipation when using it for a long time. M. The module has an input under - voltage protection function, and the default value is about 5.8V (can be set). When the voltage is lower than this value, the output will likely be automatically disconnected. (Note: When the voltage at the module port is lower than the under - voltage protection value and the input current is large, do not ignore the voltage division on the input wire.) N. Color: Blue. O. Material: Plastic. P. Dimensions: 79 x 43 x 42mm. Q. Package contents: 1 module. R. Only the above package contents are included, and no other products are included. S. Note: Light and different monitors may cause the color of the item in the picture to be slightly different from the actual one. The measurement error is allowed to be +/- 1 - 3cm.