With a pair of these serial to fiber converters, any two pieces of asynchronous serial equipment can communicate at half or full duplex over two fibers at rates up to 460 kbps for RS-422/485 or 115.2 kbps for RS-232. Fiber lines are inherently resistant to EMI/RFI and transient surges, so they are ideal for data communications near heavy electrical equipment and other electrical or radio interference.
| Part# | Description |
| ADAM-4541 | Multi-mode Fiber Optic to RS-232/422/485 Converter |
| ADAM-4542+ | Single-mode Fiber Optic to RS-232/422/485 Converter |
| BB-FOSTC | Single-mode Fiber Optic to RS-232/422/485 Converter |
| BB-9PFLST | 232/422/485 Fiber Modem W/ST Connector |
| BB-FOSTCDR | 9 Pin 232 FO Modem W/Handshake |
| BB-FOSTCDRI | FOSTCDRI with Inverted fiber terminals |
| FOSTCDRI-PH-MT | Heavy Industrial 232/422/485 to MM Fiber ST |
| FOSTCDRI-PH-SC | RS-232/422/485 to SM Fiber, Heavy Industrial |