Features [Voltage Conversion]: USB adjustable power supply module, can convert 5V voltage to 3.3V 9V 12V 24V, with strong practicability. [USB Connection]: The USB power is 3W and can be connected through a mobile phone charger or a USB 5V adapter. [With Potentiometer]: Adopts multiple turn accurate long handle potentiometer, more convenient for manual adjustment. [Beautiful Shell]: The voltage regulator has beautiful case and can display the output voltage with red light on the display. [Easy Adjustment]: Compact structure with adjustment knob, manual adjustment of output voltage, clockwise to increase. Features: 1.USB adjustable power supply module,can convert 5V voltage to 3.3V 9V 12V 24V,with strong practicability. 2.The USB power is 3W and can be connected through a mobile phone charger or a USB 5V adapter. 3.Adopts multiple turn accurate long handle potentiometer,more convenient for manual adjustment. 4.The voltage regulator has beautiful case and can display the output voltage with red light on the display. 5.Compact structure with adjustment knob,manual adjustment of output voltage,clockwise to increase. Specification: Item Type: USB Adjustable Power Module Material: ABS Color: Transparent Blue Voltage: 5V to 3.3V 9V 12V 24V USB Power: 3W Package List: 1 x USB Power Module Package List 1 x USB Power Module