| Models | Cod | Description | |
| RS232/20TTY-24 | 90000202 | Optoisolated interface unit for serial line conversion |  |
| RS232/20TTY-M | 90000201 | Optoisolated interface unit for serial line conversion |  |
| RS232/232/M | 90000211 | Optoisolated interface unit for serial line conversion |  |
| RS232/422-24 | 90000222 | Optoisolated interface unit for serial line conversion |  |
| RS232/422/M | 90000221 | Optoisolated interface unit for serial line conversion |  |
| RS232/485/M | 90000231 | Optoisolated interface unit for serial line conversion |  |
| RS232/485/AU/24 | 90000232 | Optoisolated interface unit for serial line conversion |  |
| RS232/CPM1 | 90000195 | Interface unit for serial line conversion for Omron PLC |  |
| RS232/RSU | 90000196 | Interface unit whit universal voltage supply for serial line conversion |  |
| RS232/232-24-CE | 90000213 | Optoisolated interface unit for serial line conversion |  |
| RS232/20TTY-24-CE | 90000203 | Optoisolated interface unit for serial line conversion |  |
| RS232/485-AU-24-CE | 90000233 | Optoisolated interface unit for serial line conversion |  |
| RS232/2285-24 | 90000206 | Optoisolated interface unit for serial line conversion |  |
| RS2332E | 90000208 | Optoisolated interface unit for RS232/RS232 serial line conversion |  |
| RS2320E | 90000204 | Optoisolated interface unit for RS232/RS20mA-TTY serial line conversion |  |
| RS2385EAU | 90000236 | Optoisolated interface unit for RS232/RS485 serial line conversion with automatic data direction switching |  |
| RS2385E | 90000207 | Optoisolated interface unit for RS232/RS422 or RS485 serial line conversion with manual data direction switching |  |
