The IA-3131-U2i is an Industrial Relay Controller Board that includes 32 SPST relays with both standard industrial terminal or pluggable ones. The board is supported by the rich Series-3000 commands list, with single, eight and 32 relays control commands, as well as several boards global control commands. The IA-3131-U2i Relay Controller supports a Daisy-Chain operation. It includes a buffered output port communication method, enabling a simple and a transparent control over a massive amount of boards. The IA-3131-U2i Software Support package includes USB software drivers, open source code samples as well as setup and configuration utilities for fast product implementation.