Data Acquisition / Compact Remote I/O / NA-4020/4021
NA-4020/4021
RS-232/485 (Modbus/RTU) network adaptors
Easy Maintenance
The NA-4020/4021 Ethernet network adapter can be expanded by adding up to 32 I/O modules. It provide spring type, removable terminal blocks (RTBs) that allow you to preserve field wiring before replacing an I/O expansion module. Each I/O expansion module can be replaced quickly and easily.
