Siemens SIMATIC S7-300 SM 322 Ex-Digital output modules, 24VDC, 4 digital output
Siemens SIMATIC S7-300 SM 322 Ex-Digital output modules, 24VDC, 4 digital output
Siemens SIMATIC S7-300 SM 321 Ex-Digital input modules, 24VDC, 4 digital input
Siemens SIMATIC S7-300 SM 321 Ex-Digital input modules, 24VDC, 4 digital input
Siemens SIMATIC S7-300 SM 322 Ex-Digital output modules, 15VDC, 4 digital outout
Siemens SIMATIC S7-300 SM 322 Ex-Digital output modules, 15VDC, 4 digital outout