Advantech ADAM-4520-F Isolated RS-232 (DB9) to RS-422 (4-Wire)/485 (2-Wire) Converter, 10-30VDC, Revision EE $112.40 Select
Advantech ADAM-4019+-F Remote I/O Module, 8-Channel Universal Analog Input Module, ADAM-4000 Series $438.90 Select
Advantech ADAM-4015-F 6-Channel RTD Module with Modbus, RS-485 Interface, 10-30VDC Power Voltage, 3,000 Isolation Voltage, 2 x 13-pin Plug-in Screw Terminal $432.60 Select