It is a Multiple Output Power Supply Module/Adapter/Driver Module, Input Voltage Range: 5.0V ~ 40.0V DC, Output Voltage: 4-way output,3.3V,5V,12V and ADJ Adjustable Voltage, It has small size, high efficiency, long term stable and reliable quality,easy installation and use, Suitable for DIY an adjustable voltage regulated power supply, Battery Charger, Car Power Supply Module, electronic equipment, industrial equipment,LED drive,Advertising screen,Monitoring System etc