1、Application: Used for DIY mobile power supply, monitoring, children car, camera, vehicle, communication equipment power supply 2、Voltage and Current: The input voltage is 7V~28V, the output voltage is 5V, the output current is 3A (maximum), and the long term working current is about 5A 3、Basic Specifications: Conversion efficiency of 96% (maximum), output ripple <30mV, switching frequency of 5MHz (maximum), typical 1MHz 4、Buck Module: This is DC to DC 3A buck power supply module, and power module (5V fixed output), which has the small size, easy to use 5、Simple to Operate: This buck power module is light in weight, easy to install, convenient operattion, and has wide range of use 5 x Buck Power Supply Module Item Type: Buck Power Supply ModuleMaterial: PCBInput Voltage: 7V~28VOutput Voltage: 5VOutput Current: 3A (Maximum), long term working current is about 1.5AConversion Efficiency: 96% (Highest)Output Ripple: <30mVSwitching Frequency: 1.5MHz (Maximum), Typical 1MHzWorking Temperature: -45℃~ +85℃ Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.