These are CMI modules have Serial Comunication outputs.

CMI-CD100
CMI 4xRS PORTS 8DIO
1,940.00 1940.0 ZAR Excl. VAT
CMI-COM01
CMI 2xRS PORTS 5V/12V
1,115.00 1115.0 ZAR Excl. VAT
CMI-COM02
CMI 4xRS PORTS
1,665.00 1665.0 ZAR Excl. VAT
CMI-COM03
CMI 2xRS PORTS 5V/12V
1,180.00 1180.0 ZAR Excl. VAT
CMI-COM102
CMI 2x232/422/485
905.00 905.0 ZAR Excl. VAT
CMI-ICD100
CMI 4xRS PORTS 8DIO
2,890.00 2890.0 ZAR Excl. VAT
CMI-ICOM01
CMI 4xRS PORTS
3,040.00 3040.0 ZAR Excl. VAT