Allen Bradley 1769-L18ER-BB1B CompactLogix 5370 L1 controller, dual Ethernet with DLR capability, 512KB memory, 8 I/O expansion using 1734 POINT I/O, 8 Ethernet IP nodes, 24V DC. This controller uses the POINT I/O (1734) backplane. Controllers ship with a 1GB SD card and can support SD cards up to 2GB.