Siemens SIMATIC S7-1500 SM521 Digital I/O expansion module, 24VDC, 16 digital input (sourcing)
Siemens SIMATIC S7-1500 SM521 Digital I/O expansion module, 24VDC, 16 digital input (sourcing)
Siemens SIMATIC S7-1500 SM521 Digital I/O expansion module, 24VDC, 16 digital input (sourcing)
Siemens SIMATIC S7-1500 SM521 Digital I/O expansion module, 24VDC, 16 digital input (sink/source)
Siemens SIMATIC S7-1500 SM521 Digital I/O expansion module, 24VDC, 16 digital input (sink/source)
Siemens SIMATIC S7-1500 SM521 Digital I/O expansion module, 24VDC, 16 digital input (sink/source)
Siemens SIMATIC S7-1500 SM522 Digital I/O expansion module, 24VDC, 16 digital output (transistor)
Siemens SIMATIC S7-1500 SM523 Digital I/O expansion module, 24VDC, 16 digital input(sink/source), 16 digital output(transistor)
Siemens SIMATIC S7-1500 SM522 Digital I/O expansion module, 24VDC, 16 digital output (transistor)