It is a 15W Power Supply Module/Voltage Regulator/Adapter, Input voltage: DC 12V/24V (9V~35V), Output voltage: DC 5V, Output Current: 3A, Application: DIY Power adapter/Charger, industrial equipments, electronic equipment, Communications Equipment, Power Tools, Car Driving Recorder, Car GPS, Car audio, LCD TV, Advertising screen, LED lights, Fan, intercom and monitor system, etc.