DC-DC 5V to 1.2V-24V USB Step UP/Down Power Module Adjustable ConverterThis product easily solves your problem with a variety of power supplies. This power is very convenient To use, just plug in USB or micro USB can output from 1.2V to 24V adjustable voltage, 3W power, very suitable for technical engineers and debugging, instrumentation debugging, after-sales engineers to repair the instrumentation power supply, very convenient. Feature:1. Very convenient to use, plug in USB or micro USB can output adjustable voltage 1.2v-24v2. One-click and exit off3. Digital can be locked4. Precision adjustable potentiometer with multiple wheels5. Before the electrical status of the power bank specifications: input voltage: DC 3.5-12V output voltage: DC 1.2-24V output power: Input 1.2-2V, output power Within 2W input 2V-20V, output power Within 3W input 20V-24V, output power with 2.5W display: 3-bit digital tube-shaped display one button to turn off the output supply on/off display display supporting low power mode support sleep mode support both standard USB and Micro USB and input voltage pads; Potentiometer with a rotating handle. Use Steps:1. Input voltage from standard USB or Micro USB or "vin+" and "vin-";2. Turn on the display screen;3. Adjust the potentiometer to get the required voltage;4. Connect the load. Application:1. Regular power supply2. Battery Charger3. Diode power supply controller4. Instrument voltage indicator5. Test Meter6. Circuit Test7. Power Conversion Size: 6.4 x 2.2cm/2.52 x 0.87inchNote: Please allow 1-3mm error due to manual measurement. pls make sure you don't mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package Included: 1x USB Step UP/Down Power Module