Features: 1High Conversion Efficiency: Buck converter is widely used in fixed work, synchronous rectification, high circuit conversion efficiency, circuit conversion efficiency up to 92%. 2High Frequency: The voltage regulator module has high efficiency, ultra small size, high frequency, small ripple and stable working performance. 312 to 24V Voltage Input: Reduction voltage module input 12 to 24V voltage, output 9V/2A voltage regulation. The power is 18W, and the performance is stable. 4Efficacy: This buck converter allows you to get a fixed output voltage by soldering a pot on the board, you can adjust the fixed output voltage by a potentiometer as needed. 5PCB Material: Buck converter is made of PCB material, easy to operate, just install the reduced voltage module to use, it will not take you too much time. Item Type: DC to DC Buck Module Material: PCB Input: 12 to 24V Output: 9V/2A Power: 18W Conversion Efficiency: 92% Package Included: 5 x DC&nbspto&nbspDC&nbspBuck&nbspModule