BLUENRG-134 by STMicroelectronics Design and production,in Shenzhen New Yihui Technology Co., Ltd Spot sales,And can pass Shenzhen New Yihui Technology Co., Ltd Purchasing。BLUENRG-134 Price reference $ 3.450000。BLUENRG-134 - 。You can download Chinese information、Pin map、DatasheetData sheet function specification,In the information BLUENRG-134 Detailed pin diagram and function application circuit diagram voltage and usage method and tutorial