COMPANY HEADER
Comparison : Item # 6AV6640-0AA00-0AX1, TD 400C Text Display
Item # 6ES5728-8MA11, Terminal Ground ET100 (10 PK)
Item # 6ES7211-0AA21-0XB0, CPU 221 Module
Item # 6ES7211-0AA22-0XB0, CPU 221 Processor Module
Item # 6ES7211-0AA23-0XB0, CPU 221 Compact Unit