ES1J by 星海 Design and production,in One Stai Electronic Co, LTD Spot sales,And can pass One Stai Electronic Co, LTD Purchasing。ES1J Price reference $ 0.013150。ES1J - 。You can download Chinese information、Pin map、DatasheetData sheet function specification,In the information ES1J Detailed pin diagram and function application circuit diagram voltage and usage method and tutorial