Overview of S7-200 SMART Programmable Controller
6ES7288-1SR20-0AA1 article number
SIMATIC S7-200 SMART, CPU SR20, upper, AC/DC/relay, onboard I/O: 12 24V DC digital inputs; 8 DO relay 2A; Power supply: 85 to 264V AC at AC 47-63Hz, 77 to 138 V DC program memory/data memory 20 KB