Product useage: LED vertical type switching power supply ,has eight functions , meets the standard of switch power supply certification standard of UL/CUL/ETL., Built- in LED light flashing controller has the function of overload protection ,over voltage protection ,constant voltage protection ,constant current protection and eight kinds of flashing modes. Flashing mode can be designed according to customer's requirements. This power supply can be used both indoor and outdoor . Products are mainly used in LED lighting and LED decorative lights fields,such as Christmas lights, copper wire lights, laser lights, lawn lights, etc. This kind of power supply is also known as American standard transformer, eight functions transformer, lamp string transformer, controller, UL power supply, ETL transformer, LED driver, adapter, etc. This type of vertical integrated power supply with Chinese invention patent, American invention patent, simple operation, good waterproof effect. According to different national safety certification, it can also be divided into GS, BS, SAA, UL, ETL,PSE and other built-in controller integrated power supply.