Dual USB output 9V/12V/24V/36V to 5VD-DC car charging 3A step-down voltage regulator Power module

Description

This is Dual USB Output 9V / 12V / 24V / 36V Car Charger Switch 5V DC-DC Power Supply Module 3A Buck Regulator, a combo of 3A Charger and voltage checker.Simply connect this device to the power supply, the voltage can be detected in real time. When you need the phone, IPAD, MP3 and other digital products to charge, connect it to a power supply and it will start supplying 5V 3A at its output.