It is a Buck Voltage Regulator/Adapter/Power Converter/Driver Module, Input Voltage: DC 4V~40V, Output Voltage: DC 1.5V~35V adjustable, Output Current: 3A maximum , Application: DIY Power adapter/Charger, industrial equipments, electronic equipment, Communications Equipment, Power Tools, Car Driving Recorder, Car GPS, Car audio, LCD TV, Advertising screen, Monitoring System, LED lights, Fan, intercom and monitor system, etc.

• Input Voltage: DC 4V~40V (input voltage must be higher than the output voltage to 1.5v or more. Can not boost)
• Output Voltage: DC 1.5V~35V adjustable voltage, high efficiency,
• Output Current: 3A maximum
• Features: 36u thick circuit boards, high-power high-Q inductors

• 1 x DC/DC Buck Converter ( Power Supply Module/Voltage Regulator/Adapter )