DROK Adjustable Automatic DC-DC Buck-Boost Volt Converter 3.8-32V to 1.3-35V 5V/12V/24V Power Supply
Features：Module Properties: Non-isolated step up and down moduleInput voltage :DC 3.8-32VOutput voltage :DC 1.25-35V continuously adjustableInput Current: 3A (MAX)Output power:  12W (natural cooling, input voltage is more than 10V), please do enhance heat dissipation if it works on high current applications.Size: 53 x 25 x 13.5mmthis module built-in NMOS transistor, the conversion efficiency is higher than LM2577 triode.This module is automatic adjustable voltage module, the module can be adjusted by adjusting 3296W precision multi-turn  adjustable potentiometer to change the output voltage. The maximum output voltage is 35V. Clockwise turn boost,counterclockwise turn buck.With input reverse polarity protection (only protect reverse current 1A or less)Package include:1x DC-DC Boost Buck Converter