Feature: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 ModuleMaterial: ABSColor: Transparent BlueVoltage: 5V to 3.3V 9V 12V 24VUSB Power: 3W.Package List:1 x USB Power Module