Siemens 6AG1221-1BH50-7XB0 Digital Input Module. The recorded exact-product description states: SIPLUS S7-1200 G2: SM1221 16DI based on 6ES7221-1BH50-0XB0 with conformal coating -40...+70 °C . inputs: 16x DI 24 V DC sink/source.
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