1.The input voltage range of the Buck-boost converter is DC 5.5-30V; The output voltage range is DC 0.5-30V, can be arbitrarily adjustable; The output current range is 0-4A, can be adjusted arbitrarily; if it improves heat dissipation, it can reach 4A; The maximum output power is 35W, 3A output of 35W for stable working for a long time; if it improves dissipation, it can reach 50 W.

2.Button Control: Short press IN/OUT to change the input and output voltage, long press to change the output current power. Short press ON/OFF to control the ON or OFF output, long press to set the default output state ON or OFF.

3.The voltage regulator module adopts LCD design, can change the display input voltage, output voltage, output current and output power; The voltage display resolution is 0.05V, the current display resolution is 0.005A.

4.The liquid crystal can display the input and output voltage and output power of the output current, can be used for common step-down and step-down modules with over-current protection, adjustable battery charger, LED driver, etc.

5. Safety protection: LC filter, small output ripple, input anti-reverse connection protection, will not burn out, short circuit protection, low voltage protection