Product useage: LED vertical type switching power supply,meets the standard of switch power supply certification standard of UL/ETL/CUL etc., has the function of overload protection ,over voltage protection ,constant voltage protection ,constant current protection capabilities .Product can be used indoor and outdoor according to different service environment .At the same time ,this product is mainly applied in LED lighting ,LED decorative lights areas , such as Christmas light ,copper light ,laser light, lawn lamp etc, and it also can be used in small household appliances , communications , battery charge , motor , electrical machine fields. This power supply is also called LED driver, transformer, AC/DC adapter, festival light transformer, decorative light transformer, LED transformer,etc.