Advantech BB-232OPDRI Serial Repeater, RS-232, TB, Triple Isolated, 10-48VDC, DIN Rail Mount, UL C1/D2 $273.00 Select
Advantech BB-485OI9TB Serial Converter, RS-233 DB9F to RS-422/485 TB, 1.5 KV Isolation, DB9 Female / Terminal Block $109.00 Select
Available Now! Advantech BB-4WSD9TB Serial Converter, RS-232 DB9 F to RS-422/485 Terminal Block, Port Power Ability $87.50 Select