Advantech
BB-485PTBR
Converter, RS-232 to RS-485, Female DB9 connector with pins 2(RD), 3(TD), and 5(SG) supported, 8-Position Pluggable Terminal Block Connector
Serial Converter, RS-232 DB9 F to RS-422 TB, Port Powered, Converts RS-232 (DB9F) to RS-422 (DB9F), Bidirectional
Features Include: