15W DC-DC Buck Boost Voltage Converter, 5V to 3.3V 9V 12V 24V 30V CVCC Step Up/Down Module Adjustable USB Power Supply Module with Shell

The Output Voltage Can Be Adjusted Arbitrarily: The Adjustable USB Step Up Down Power Supply Module serves as a USB input adjustable desktop power supply. The output voltage can be adjusted arbitrarily, and the current limit is 0-2A (wide input 4-13V, wide output 0.5 -30V arbitrarily adjusted, with short circuit protection; the short circuit does not burn).
Safe to Use: Used as a USB charging cable, the charging voltage and maximum charging current can be adjusted arbitrarily (any voltage, with constant current and anti-backflow), which can meet the charging of most batteries.
Three Input Power Modes: Input
1: Standard Type A USB Male. It can only input DC 5V.
Input 2: Micro USB Female. It can only input DC 5V.
Input 3: IN+ and IN- welding pads. It can input DC 4.0V - 13.0V. When using the welding pad to input, be careful not to connect the reversed positive and negative poles, and do not connect to AC power.
Multiple Protection Functions: short-circuit, over-current, over-temperature, over-power, over-voltage protection, and charging anti-backflow protection.
Wide Application: It is widely used in ordinary power supply, battery charger, LED driving power, instrument voltage display, test counter, circuit test, power conversion, more details, please read the user manual