| DI-16(FIT)GY | Digital input F&eIT I/O module 16ch (isolated 12 - 24VDC) | 
| DI-32(FIT)GY | Digital input F&eIT I/O module 32ch(isolated 12 - 24VDC) | 
| DI-8(FIT)GY | Digital input F&eIT I/O module 8ch (isolated 12 - 24VDC) | 
| DIO-16/16(FIT)GY | Digital I/O F&eIT I/O module 16ch/16ch (isolated 12 - 24VDC) | 
| DIO-4/4(FIT)GY | Digital I/O F&eIT I/O module 4ch/4ch (isolated 12 - 24VDC / 12 - 48VDC) | 
| DIO-8/8(FIT)GY | Digital I/O F&eIT I/O module 8ch/8ch (isolated 12 - 24VDC) | 
| DIO-8D(FIT)GY | Digital I/O F&eIT I/O module bi-directional 8ch (non-isolated 5VDC-TTL) | 
| DO-16(FIT)GY | Digital output F&eIT I/O module 16ch (isolated 12 - 48VDC) | 
| DO-32(FIT)GY | Digital output F&eIT I/O module 32ch (isolated 12 - 48VDC) | 
| RRY-4(FIT)GY | Reed relay contact output F&eIT I/O module 4ch (isolated  - 125VAC  - 30VDC) |