The IA-3131-U is an intelligent 32 USB Relays Controller board, Daisy-Chained through
RS-232 communication facility, and is a part of the IA-3000 Multi-module Series.

The IA-3131 modules address identity and initiate output states may be easily defined.
Board's Address and each relay status are locally displayed.

Up to 256 IA-3131 modules, or any mix of IA-3000 Series modules may be easily controlled by a host computer or PLC, through a single USB port.