6ES7321-7RD00-0AB0
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Description
SM 321 DIGITAL INPUT, 4 X 24V NAMUR / HAZ.
SIMATIC S7, DIGITAL INPUT SM 321, OPTICALLY ISOLATED, 4 DI, 24V DC, NAMUR/DIN 19234, FOR SIGNALS FROM HAZARDOUS AREAS, CAPABLE OF DIAGNOST., PTB-TESTED