Dc-dc Usb Step Up Power Supply Voltage Regulator Module Boost Converter Out 5v to 3.3v 9v 12v 24v

Description

It is very convenient to use, plug in USB or micro USB to output an adjustable voltage of 1.2V-24V One key to turn off the output The nixie tube can be turned off Use multi-turn adjustable potentiometer to adjust The state before power failure is stored