This product is a converter, which is made of durable electronic component and PCB material, with good texture, sturdy and practical. Easy to install and use, it can be easily applied to your equipment, a very practical accessory that will meet your needs well. Features -Color:Black -Material:PCB, Electronic Component -Size:3.30X2.10X0.80cm/1.30X0.83X0.31in -Input voltage range: 6V-32V -Output voltage: 5V by default, automatically adjusted between 3-12V after triggering fast charge -Output power: up to 24W (5V3.4A, 12V2A, etc.) -Conversion efficiency: 90%-97% -This DC step-down module can convert a 12v/24v power supply to a USB 3.0 fast charging output, providing fast charging for your devices. -Equipped with a single USB port, this phone charging board can deliver quick charging to your devices. -This converter is widely applicable for various power supply modifications, making it a versatile tool for your charging needs. -With long-term use, this DC-DC voltage regulator can operate without damage, ensuring reliable and consistent performance. -Featuring a simple design, this Power Supply Regulator is easy to use and can be integrated into your charging setup with ease. Package list: 4 x Converters