This PLC came off a working aerowerks conveyor system. The replacement part number would be 8711911. The PLC is used but in good working condition. The conveyor unit that the parts came out of is: Model:SBC-N/PRC-N/MCR/TAC-N/PC-N Serial:J121534 It is always good practice to call the manufacturer with your units serial number to verify that these part will fit.
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