Features 1、Suitable for USB5V/3.3V powered devices such as power bank, mobile phones, and tablets. 2、Made of high quality electronic components, stable and reliable performance. 3、Easy operation, anti-aging, prolong service life. 4、Accurate incision and interface ensure perfect applicability. 5、Perfectly fit for installation location and easy to install. Specification Item Type: DC-DC Buck Module Input: 4.5V-23V Output Current: 3A (Max) Conversion Efficiency: 92% (Max) Switching Frequency: 340KHZ (Max) Working Temperature: -40°C-+85°C Load Capacity: Large output 3A, 1.5A long run Product Size (LxWxH): Approx. 23.6 x 14.2 x 4mm / 0.9 x 0.6 x 0.2in Scope of Application: USB5V/3.3V powered devices such as mobile power, mobile phones, and tablets Package List 5 x DC-DC Buck Module