Crestron CNCOMH-2 RS-232/422 Interface Module

PC BD 4-Channel RS-422 Interface Card Board Assembly 4004456-101

PC BD 4-Channel RS-422 Interface Card Board 4004456-101

Keopsys RS232 Interface Module

PC BD 4-Channel RS-422 Interface Card Board Assembly 4004456-101

Telebyte 245 RS-232 to RS-422 / RS-485 Optically Isolated Interface Converter

Honeywell RS-422/485 Interface Board ASSY 30756693-001 PCB F-06-0100-0103

PEP SC-232 RS232 Interface Piggyback with TxD, RxD, DTR and CTS Signals