Allen Bradley 1769-L16ER-BB1B CompactLogix 5370 L1 controller, dual Ethernet with DLR capability, 384KB memory, 6 I/O expansion using 1734 POINT I/O, 4 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.