Check the listing for details. 5pcs MT3608 DC-DC Step Up Power Module Adjustable Booster Module For Arduino. Condition: New, Made in China. Listed at 7.69 USD. 5pcs MT3608 DC-DC Step Up Power Module Adjustable Booster power Module For Arduino Desciption: The maximum input current: 2A Input voltage: 2V ~ 24V The maximum output voltage: > 5V - 28V Efficiency: > 93% Mechanical properties: Product size: 36mm*17mm*14mm Attention: The input voltage should not exceed the maximum input voltage Peak current output current is not more than 2A Note: Note: If you encounter module output voltage can not be adjusted, always equal to the input voltage, please rotate the potentiometer counterclockwise for more than 10 turns, and then use the module can be adjusted voltage normally! Package Included: 5 X MT3608 2A Max DC-DC Step Up Power Module See more in the flyfuntech2022.