Product useage: LED vertical power supply ,normally on with dimming function , meets the standard of switch power supply certification standard of SAA . Built- in LED light flashing controller has the function of overload protection ,over voltage protection ,constant voltage protection ,constant current protection and dimming capabilities , such as 100%-75%-50%-25%-0（from bright to dark）. Dimming 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 called SAA standard transformer, lamp series transformer, controller, SAA power supply, SAA transformer, LED driver, adapter, etc. This type of vertical integrated power supply with invention patent, simple operation, good waterproof effect.