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Siemens SM1221 Digital Input Module

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Siemens SM1221 Digital Input Module
Manufacturer: Siemens

The SM 1221 digital input signal modules convert the level of the external digital signals from the process into the internal signal level of the S7-1200.

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Features Applications Model
  • Digital inputs as supplement to the integral I/O of the CPUs
  • For flexible adaptation of the controller to the relevant task
  • For subsequent expansion of the system with additional inputs
  • Digital input modules allow the connection of the controller to digital signals of the process.
Mfr. Part No. Description
6ES7221-1BF32-0XB0 DIGITAL INPUT SM 1221, 8DI, 24V DC

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