Product Description: Converter with plug clamp: converts RS232 to RS485 half-duplex, RS 232-connection: 9-pole D-Sub-plug, RS 485-connection: 3-pole screwable plug clamp (RS485 A, RS485 B, GND), automatic switching between send/receive, supply through RS232-Interface, baud rates: 9,6kbit / 115kbit.