SIMATIC S7-300, DIGITAL INPUT SM 321 - 6ES7 321-1BH02-0AA0 - Siemens
 "6ES7 321-1BH02-0AA0"){kind=small}
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6ES7 321-1BH02-0AA0Manufacturer Brand
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SIMATIC S7-300, DIGITAL INPUT SM 321 - Siemens
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6ES7 321-1BH02-0AA0 Siemens