IT191-OPC Operation manual Manual AT commands USB driver, version 6.7.0.0 Configuration software "QuickSetup", version 2.9.39 (2021-02-15) Configuration software "CONNY", Version 3.5.50 (2022-06-28) IT191-OPC Operation manual Manual AT commands USB driver, version 6.7.0.0 Configuration software "QuickSetup", version 2.9.39 (2021-02-15) Configuration software "CONNY", Version 3.5.50 (2022-06-28)