Features:1. Use high-quality materials, durable 2. Exquisite appearance 3. Convenient to use 4. Stable performance 5. Wide application range Parameters: Name: DC-DC adjustable step-down module Input: 12-75V Output: 2.5-50V adjustable Current: 25A (MAX) Efficiency: 95% maximum (the smaller the pressure difference, the higher the efficiency) Wiring: For high-power situations, the wiring should be as thick as possible. Voltage conversion overview: 12-75V to 5V 12-75V to 9V 14-75V to 12V 17-75V to 14.8V 19-75V to 16.8V 22-75V to 1 9V 24-75V to 21V 28-75V to 24V 35-75V to 30V 41-75V to 36V 48-75V to 42V 55-75V to 48V IN+: input positive electrode VADJ: Output voltage regulation 0UT+: output positive electrode IN -: input negative electrode clockwise large counterclockwise small OUT -: output negative electrode Attention: To charge the battery and battery, please add a diode to the output to prevent backflow! Material: ABS colour: As Shown Package Contents: 1 x DC adjustable buck module Only the above package content, other products are not included. Note: Light reflection 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.