OLS449 by Skyworks Design and production,in HongKong RichShine Technology Co., Limited Spot sales,And can pass HongKong RichShine Technology Co., Limited Purchasing。OLS449 Price reference $ 73.390000。OLS449 - 。You can download OLS449 Chinese information、Pin map、DatasheetData sheet function specification,In the information OLS449 Detailed pin diagram and function application circuit diagram voltage and usage method and tutorial