STR-440 by Keystone Electronics Corp Design and production,in Fidelis Electronics Limited Spot sales,And can pass Fidelis Electronics Limited Purchasing。STR-440 Price reference $ 164.680000。STR-440 - 。You can download Chinese information、Pin map、DatasheetData sheet function specification,In the information STR-440 Detailed pin diagram and function application circuit diagram voltage and usage method and tutorial