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6ES7421-7DH00-0AB0
Product Code: 242
![6ES7421-7DH00-0AB0](https://images.findtheneedle.co.uk/findtheneedle/products/2925414.jpg)
Simatic S7-400, SM 421 Digital Input Module, Optic. Isolated, 16 DI, 24 - 60V Uc, Alarm, Diagnostics
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