Advantech ADAM-4018+-F Remote I/O Module, 8-Channel Thermocouple Input Module with Modbus, ADAM-4000 Series $358.10 Select
Advantech ADAM-4060-F 4-Channel Relay Output Module with Modbus, 150 x 85 x 51mm (LWH) $171.20 Select
Advantech ADAM-4510S-F Serial Repeater, RS-422/485 Repeater with Isolation, ADAM-4500 Series $195.30 Select