Output Modules - BCS-NX2020: Output module, 240V AC / 24V DC, 16 relay outputs, 2.0A per output and 4.0A per group spring clamp terminal, occupies 2 sequential slots
CPU - BCS-NX3030: High-speed CPU, 2 Ethernet ports, 2 serial channels, mini SD card interface, remote rack expansion and redundancy support. With Redundancy.