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Siemens SM421 Digital Input Module

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Siemens SM421 Digital Input Module
Manufacturer: Siemens

Digital input modules convert the levels of the external digital signals from the process into the internal signal level of the S7-400.

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Features Applications Model
  • Digital inputs for the SIMATIC S7-400
  • For connecting standard switches and two-wire proximity switches (BERO)

Digital input modules can be used to connect the control to digital process signals. They are suitable for connecting standard switches and two-wire proximity switches (BERO).

Mfr. Part No. Description
6ES7421-7BH01-0AB0 SM421, 16DI, DC24V, 0.05MS INPUT DELAY

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