STR1550 by STMicroelectronics Design and production,in Shenzhen HYLX Technology Ltd. Spot sales,And can pass Shenzhen HYLX Technology Ltd. Purchasing。STR1550 Price reference $ 0.460000。STR1550 - 。You can download Chinese information、Pin map、DatasheetData sheet function specification,In the information STR1550 Detailed pin diagram and function application circuit diagram voltage and usage method and tutorial