The IA-3131-U2i is an Industrial, 32-ch, Relay Controller Board with both standard or pluggable industrial terminals. 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, that can set the status of several hundreds relay at the same time. 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 is being widely supported by Microsoft Studio Class Library, by National-Instruments Labview Drivers and by various open code software examples. for fast and easy product implementation.