Features Excellent PCB Material: This USB DC buck module is made of excellent PCB material, which is sturdy and wear resistant and not easy to be damaged, and has a long service life. Automatic Adjustment: This USB DC buck module has an input voltage of 6 to 32V and an output voltage of 5V, which is automatically adjusted between 3 to 12V after triggering the fast charging. Easy To Install: This USB DC buck module is compact, lightweight, which is easy to install and can be done quickly. Multiple Protection Functions: This USB DC buck module has overvoltage, undervoltage protection, overcurrent protection, short circuit protection and over temperature protection. Wide Application: This USB DC buck module has a wide range of applications and can be used in cell phones, laptops, smartphones, tablets, televisions, sound players, industrial control devices, automotive electronics and other fields. Specification: Item Type: USB DC Buck Module Material: PCB Input Voltage Range: DC6V-30V Output Voltage: Default 5V, Automatically Adjust Between 3-12V After Trigger Fast Charging Output Power: Maximum 24W (5V at 3.4A, 9V at 2.5A, 12V at 2A, etc.) Output Voltage with Line Compensation Function Conversion Efficiency: 90%-97% Supports multiple fast charging protocols. Input Over Voltage and Under Voltage Protection Input Overcurrent Protection Output Overcurrent and Short Circuit Protection Over Temperature Protection Package List:1 x USB DC Buck Module Package List 1 x USB DC Buck Module