6ES7288-1SR40-0AA1/6ES7288-1SR40-0AA0 CPU SR40, AC/DC/Relay, 24DI/16DO SIMATIC S7-200 SMART, CPU SR40, CPU, AC/DC/relay, onboard I/O: 24 DI 24 V DC; 16 DQ relay 2 A; power supply: AC 85 - 264 V AC at 47-63 Hz program/data memory 40 KB web server support