DLX RS485 / 422 / 232 Optical Modem is equipment which transmit RS485 / 422 / 232signal by fiber and use to connecting between routers. 
Features: 
1. Offer one RS485 / 422 / 232 and duplex fiber interface
2. AC-48V and DC 220V optional
3. Alarm indicators of TD and OD and LOS
4. Typical distance is 40KM. 
5 Support two kind tramsmitting of E1 transparency and E1 fast
6. Single mode or multi mode optional and wavelength is 850 nm and 1310nm or 1550nm
7. Connector: ST / SC / FC optional
8. Fiber code is 1B1H and rate is 4096 Kbit / s
9. E1 rate: 2. 049kbit / s
Environment: 
1. Working temperature: -0 to 50oC
2. Storage temperature: -40 to 70oC
3. Humidity: relative humidity, 5% to 95% non-condensing
4. Pressure: 86-106Kpa
5. Power: 
AC180-240V
DC-36-----72V
Consumption: < 5w