Fangrui Product Details Features: 1. Module Nature; Non-isolated Step-down Voltage Regulator 2. Input Voltage Range: Dc12-75v 3. Output Voltage Range: Dc2.5-50v Adjustable (for Applications Where The Input Voltage Is The Output Voltage, The Voltage Cannot Be Boosted) Counterclockwise To Increase The Voltage And Clockwise To Decrease The Voltage 4. Output Current: 25a (max) For Long-term Use Below 15a. If It Exceeds 15a, You Need To Increase The Fuse. When The Module Temperature Exceeds 75 Degrees For Long-term High-current Use, Please Use Additional Heat Dissipation Or Derating. 5. Working Frequency: 150khz Description: 1. Built-in Fan Temperature Control: Yes, 12v Starts At About 45 Degrees 2. Conversion Efficiency: Typical Value , Efficiency Is Related To The Pressure Difference And Load Power 3. Input Anti-reverse Connection: None (please Add A Series 2-pole Transistor To The Input End If Necessary) 4. Minimum Voltage Difference: 3v (the Higher The Input Voltage, The Greater The Minimum Voltage Difference Requirement) 5