EVK-L20 by U-BLOX Design and production,in HongKong RichShine Technology Co., Limited Spot sales,And can pass HongKong RichShine Technology Co., Limited Purchasing。EVK-L20 Price reference $ 399.000000。EVK-L20 - 。You can download EVK-L20 Chinese information、Pin map、DatasheetData sheet function specification,In the information EVK-L20 Detailed pin diagram and function application circuit diagram voltage and usage method and tutorial