[Adjustable Voltage]: adopt multi-turn adjustable potentiometer to adjust voltage. One key to turn off the output, and store the state before power off, no worry about data loss. The power supply module display with voltage, USB adjustable boost power supply module 3.5-12V to 1-24V. Plug in USB or micro-USB can easily output adjustable voltage from 1V to 24V and the power is 3W. [Data Storage]: automatically save the state before the power failure, the output data not be lost., Weight: 0.2314853751 pounds, Manufacturer: MOLERRI