Comparison : Item # AX140100, Protocol Converter, 2 SAE J1939, Modbus RTU
Item # AX140100-100, Protocol Converter, 2 SAE J1939, Modbus RTU, Extended Inputs
Item # AX140200, Protocol Converter, SAE J1939, CANopen®, Modbus RTU
Item # AX140320, Protocol Converter, 2 SAE J1939, 1 RS-422 or RS-485
Item # AX140321, Protocol Converter, SAE J1939, CANopen®, Modbus RTU