SIMATIC S7-1200, digital input SM 1221, 8 DI, DC 24V, Sink / Source - 6ES7221-1BF32-0XB0 - Siemens
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SIMATIC S7-1200, digital input SM 1221, 8 DI, DC 24V, Sink / Source - Siemens
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6ES7221-1BF32-0XB0 Siemens