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> Siemens 6ES7 421-1FH00-0AA0 simatic S7-400 sm 421 ac/in
Siemens 6ES7 421-1FH00-0AA0 simatic S7-400 sm 421 ac/in
Siemens 6ES7 421-1FH00-0AA0 SIMATIC S7-400 SM 421 AC INPUT (((FACTORY SEALED)))
SIMATIC S7-400, SM 421 DIGITAL INPUT MODULE, OPTIC. ISOLATED, 16 DI, 120/230V AC
See here for more information http://support.automation.siemens.com/WW/view/en/4069089
No returns on factory sealed items if they have been opened.
