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Siemens 6ES7 321-1BH02-0AA0 Digital Input Module OP510-SI3 SS270-R-13-2-4-A---CC 148947---34Siemens 6ES7 321 1BH02 0AA0 Digital Input Module Used Good Visual Condition 5 24LB SS289 T 24 5 4 E CC 152496 1. 00# Return Policy Returns accepted within 30 days. Items sold as is cannot be returned, unless description is in error. Buyer pays return freight. Shipping Policy We ship almost all items with 1 business day of cleared payment. We ship USPS and UPS. We can ship on your account. If you will be shipping freight, please be sure to provide all