Note:  This product is a step-down module and cannot be boosted The input voltage is 55V, and the output voltage can be adjusted from 0-50V. If the output voltage is 12V, the minimum input voltage should be 14V. The input voltage should not exceed 55V, it must be DC and not AC.     Features:  1. The LCD can display input/output voltage, output current/output power/output capacity/output time;  2. Numerical control adjustment, precise and fast, step-down output, arbitrary adjustment of output voltage 0-50.00V, arbitrary adjustment of limited current 0-20.00A;  3. The output terminal will not burn when it is poured backwards;  4. The module can be set to be turned on/off by default;  5. Has a variety of software protection mechanisms, and the protection threshold is adjustable. When the working parameters of the module exceed the protection threshold, the output will be automatically turned off;  6. Using synchronous rectification technology, high conversion efficiency: more than 90% efficiency;  7. Increase the heat sink and install a fan to enhance heat dissipation.     Specification:  Display: LCD.  Input voltage range: 6-55.00V. Input voltage resolution: 0.01V.  Output voltage range: 0-50.00V. Output voltage resolution: 0.01V.  Output current range: 0-20.00A. Output current resolution: 0.01A.  Output power range: 0-1000W. Input voltage accuracy: (1%+5).  Output voltage accuracy: (0.3%+5).  Output current accuracy:  (0.5%+5).  Typical value of output ripple: 150mV Peak value.  Normal operating temperature range: -10~40°C.  Capacity measurement range: 0-999.9AH. Statistical error of capacity energy: 2%.  Statistical time range: 0-100hour. Depressurization mode: differential pressure >0.05%+1V.  Product size: panel 79X43X42mm. Product size: Main board 106x76x40mm.  Soft start: Yes.     Protection mechanism:  Input undervoltage protection (5.8-50v adjustable, default 5.8v).  Output overvoltage protection (0-51.00v adjustable, default 51V).  Output over-current protection (0-20.10a adjustable, default 20.10a).  Timeout protection (0 - 100h adjustable, off by default).  Over capacity protection (0 ?€? 999.9ah adjustable, off by default).     Package includes:  1 x DIY Desktop CNC Power Supply