SM1221
6ES7221-1BH32-0XB0 : SIMATIC S7-1200, Digital input SM 1221, 16 DI, 24 V DC, Sink/Source
6ES7221-1BF32-0XB0 : SIMATIC S7-1200, Digital input SM 1221, 8 DI, 24 V DC, Sink/Source
6ES7221-1BH32-0XB0 : SIMATIC S7-1200, Digital input SM 1221, 16 DI, 24 V DC, Sink/Source
6ES7221-1BF32-0XB0 : SIMATIC S7-1200, Digital input SM 1221, 8 DI, 24 V DC, Sink/Source