Siemens 6ES7321-1FF10-0AA0 S7-300, digital input SM 321, potential isolation, 8 digital inputs, 120V/230V AC, 1 40 pin

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Siemens 6ES7321-1FF10-0AA0 S7-300, digital input SM 321, potential isolation, 8 digital inputs, 120V/230V AC, 1 40 pin with single shared root/channel