Siemens SIMATIC ET200pro 4/8 F-DI/4 F-DO 24VDC, 8 digital input, 4 digital output
Siemens SIMATIC ET200pro F-switch 24VDC, 2 digital input, 3 digital output
Siemens SIMATIC ET200pro 8/16F-DI 24VDC, 16 digital input