About this item The maximum output current: 2A; The input voltage: 2V - 24V The maximum output voltage: 28V; Efficiency: max 93%; Product size: 5.71 x 4.72 x 0.63 inches Method of use: connect the IN+ and IN- to 2-24V, then adjust the potentiometer to set the output voltage, which can exceed the input voltage. Please note: The input voltage should not exceed the maximum input voltage; adhere to the peak current limitations. Package included: 10 x DC-DC power apply module booster power module, max output is 28Volt. Dimensions: 5.71 x 4.72 x 0.63 inches.