USB DC-DC Step Up Down Power Supply Module 5V to 1-24V Adjustable with Display

From the shop's description

The module is a DC adjustable step-up/down power supply module with 3Bit LED digital tube display. Display output voltage in real-time. Rotate the potentiometer to adjust the output voltage. Set output voltage to meet the requirements. It can be used as an ordinary buck power supply module. Simple and efficient, practical. Features: Low power supply Wide voltage output Support boost and buck Long handle potentiometer adjustment Parameters: Product Name: DC-DC 3W USB Step Up Down Power Supply Module Input Voltage:DC 5V Output Voltage:DC 1.0V-24.0V Output Power:3W(Max) Conversion efficiency:94% Working current:30mA Working Temperature range:-20°~85° Working Humidity range:0%-95%RH Size :70x27x23mm Using Steps: Input DC 5V from USB male socket Adjust output voltage by potentiometer to meet require Remove input voltage; Connect load at output terminal Re-connect power ON and enjoy using. Note: Please don’t short output. Its maximum output power is 3W, which cannot exceed. Application: Ordinary power supply Battery charger LED drive power Instrument voltage display Test meter Circuit test