8-channel 24VDC universal digital input module for X20 automation I/O system. ...

4-channel 24VDC universal digital input module for X20 industrial control system. ...

4-channel 24VDC universal digital input module for X20 automation control system. ...

8-channel isolated relay output unit for X20 industrial automation control system. ...

Isolated RS485/RS232 interface for X20 PLC serial data communication. ...

Isolated RS232 serial module for X20 system device data exchange. ...