Aug 11 2009

6ES7421-1BL00-0AA0 SIMATIC S7-400, SM 421,

SIMATIC S7-400, SM 421,DIGITAL INPUT MODULE,,OPTIC. ISOLATED, 32 DI, 24V DC
SIMATIC S7-400, DIGITALEINGABE,SM 421, POTENTIALGETRENNT,32 DE; DC 24V
SIMATIC S7-400, ENTREES TOR,SM 421, AVEC SEP. GALVANIQUE,32 E TOR, 24V DC
SIMATIC S7-400, ENTRADA DIGITAL,SM 421, CON AISL. GALVANICO,32 ED; 24V DC

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