SIEMENS 6ES5921-3UA12 Description Description SIEMENS SIMATIC S5, CPU 921 CENTRAL CONTROLLER MODULE F. CC 135U Related products SIEMENS 1FK7060-5AF71-1FH3 SIEMENS 1FK6032-6AK71-1TG0 SIEMENS 1FK7011-5AK71-1TG3 SIEMENS 1FT5072-0AC01-0-Z SIEMENS 1FN1910-0AA20-3AA0 SIEMENS 1FN1910-0AA20-1AA0
