LOGO! 12/24RCEO, LOGIC MODULE, WITHOUT DISPLAY, POWER SUPPLY I/O: 12/24VDC/RELAY, 8 DI (4 AI)/4 DO, MEMORY 800 blocks, MODULARTY EXPENDABLE, Ethernet, INTEGRATED WEB SERVER, DATA LOG, USER-DEFINED WEB PAGES, STANDARD microSD card for LOGO! Soft Comfort