| Series | Description | Max Baud Rate | Max Distance | Notes |
| DCP485 | Fully Isolated DIN Rail RS-232/485 Converter/Line Driver | 115.2K at 0.8 miles (1.3 km) | 7 miles (11.3 km) at 1.2 K baud |
DIN Rail mounting Auto RS-485 Line control |
| LDM422 | Fully Isolated Limited Distance Modem, RS-232/422 Converter | 19.2K at 1 mile (1.6 km) | 7 miles (11.3 km) at 1.2 K baud |
Multidrop capable RTS/CTS handshake or 2nd data channel |
| LDM485 | Fully Isolated Limited Distance Modem, RS-232/485 Converter | 57.6K at 0.5 miles (0.8 km) | 8 miles (12.9 km) at 2.4K baud |
Multidrop capable RTS/CTS handshake or 2nd data channel |
|
LDM80 |
Signal Powered Fiber Optic Modem | 19.2K at 2.2 miles (3.5 km) | 2.2 miles (3.5 km) at 19.2K | Total electrical isolation, intrinsic safety |
| LDM85 | Fiber Optic Modem | 5M - 2.5Mbps NRZ TTL (100Kbps RS-232/422) at 1.2 miles (2 km) | 1.2 miles (2 km) at max baud rate |
Multipoint optical loop, total electrical isolation |
