The DeltaV™ Traditional I/O is a modular subsystem that offers flexibility during installation by being able to be installed in the field, near your devices. Traditional I/O is equipped with function and field wiring protection keys to ensure that the correct I/O card is always plugged into the corresponding terminal block. Modularity, protection keys, and plug and play capabilities make DeltaV Traditional I/O a smart choice for your process control system.