Features 1、VOLTAGE CONVERSION: USB adjustable power supply module, can convert 5V voltage to 3.3V 9V 12V 24V, with strong practicability. 2、USB CONNECTION: The USB power is 3W and can be connected through a mobile phone charger or a USB 5V adapter. 3、WITH POTENTIOMETER: Adopts multiple turn accurate long handle potentiometer, more convenient for manual adjustment. 4、BEAUTIFUL SHELL: The voltage regulator has beautiful case and can display the output voltage with red light on the display. 5、EASY ADJUSTMENT: 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 USB Power: 3W Package List 1 x USB Power Module