... to use with the transistor and integrated circuit together,this LED lamp is widely used in-the communication appsratus,digital device ... .convenient maintenance,the Led lamps is used in illumination fiel-d,e.gspot lamp,rainbow strip.wall lamp,project lamp,ground coner ... ,onpackaging and craft.and develo-ped0.5,1w,3w power LEd,which are extensively applied in illumination,lighting and flashlight.