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Siemens 6ES7221-1BF32-0XB0 SM 1221 Digital Input Module
Siemens Digital Input Module, SM 1221 Series – Siemens 6ES7221-1BF32-0XB0, The Siemens 6ES7221-1BF32-0XB0 is a SM 1221 Digital Input Signal Module that converts the level of the external digital signals from the process into the internal signal level of the S7-1200. The signals can be mixed as desired, and users can then adapt their controllers exactly to the relevant task. This signal module is supplied with 8 input channels. Siemens 6ES7221-1BF32-0XB0 SM 1221 Digital Input Module
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