6ES7288-1SR20-0AA1/6ES7288-1SR20-0AA0 Siemens CPU SR20, AC/DC/Relay, 12DI/8DO SIMATIC S7-200 SMART, CPU SR20, CPU, AC/DC/relay, onboard I/O: 12 DI 24 V DC; 8 DQ relay 2A; power supply: AC 85 - 264 V AC at 47-63 Hz, 77 to 138 V DC program/data memory 20 KB