Feature: 1. Easily adjust output voltage and current by long handle potentiometer, no screwdriver needed. 2. Equipped with large size aluminum heat sink, outer case and cooling fan. 3. Clear LCD display of Input Voltage, Output Voltage, Output Current, Output Power And Temperature. 4. All round protection: Input Reverse Polarity Protection, Output Anti-Backflow Protection (no anti-backflow diode required when charging battery), Overcurrent Protection, Over Power Protection, Over Temperature Protection. 5. Freely adjust output voltage within 0.5-30V and limiting current within 0-6A. 6. Press the button to control the F state of the output end, and you can set the default ON/OF state of power-on. Specification: Item Type: DC-DC Boost Buck Converter Input Voltage: 5.5-30V (when the input voltage is 5V, the buck-boost can also be realized, but the voltage and current measurement is not accurate; below 4.7V, under-voltage protection) Output Voltage: 0.5-30V Output Current: 6A Output Power: 60W Voltage Display Resolution: 0.01V, accuracy error 1% Current Display Resolution: 0.001A, accuracy error 1% Conversion Efficiency: about 88% Soft Start: Yes (May fail to start at high power load) Input Reverse Connection Protection: Yes Output Anti-Backflow: Yes, can be directly connected to the battery Short Circuit Protection: Yes, can directly short the output Temperature Protection: 100°C Power Protection: 60W Overcurrent Protection: 6A Working Frequency: 180KHZ Fan Rotation Conditions: Current > 3A / Power > 20W / Temperature > 40°C Size: 72x59x32mm / 2.83x2.32x1.26in Mounting Hole: 3mm Weight: Approx 81g. Package List: 1 x DC-DC Boost Buck Converter1 Pack x Fan and Accessories1 Pack x Assembly Accessories