Siemens SIMATIC S7-300 SM 321 DIO, 24VDC, 16I

Siemens SIMATIC S7-300 SM 323 Digital I/O expansion module expansion module, 24VDC, 16 digital input, 16O digital output

Siemens SIMATIC S7-300 SM 323 Digital I/O expansion module expansion module, 24VDC, 16 digital input, 16O digital output

Siemens SIMATIC S7-300 SM 323 Digital I/O expansion module expansion module, 24VDC, 16 digital input, 16O digital output

Siemens SIMATIC S7-300 SM 321 Digital I/O expansion module expansion module, 24VDC, 16 sourcing input

Siemens SIMATIC S7-300 SM 321 Digital I/O expansion module expansion module, input delay, 24VDC, 16 digital input

Siemens SIMATIC S7-300 SM 321 Digital I/O expansion module expansion module, interrupt, 24VDC, 16 digital input

Siemens SIMATIC S7-300 SM 321 Digital I/O expansion module expansion module, 24VDC, 32 digital input

Siemens SIMATIC S7-300 SM 327 Digital I/O expansion module expansion module, 24VDC, 8 digital input, 8 digital input & output