Industrial RS232/RS485/RS422 Fiber Modem Up to 80Km DIN-Rail Mount
Industrial RS232/RS485/RS422 Fiber Modem Up to 80Km DIN-Rail Mount
Overview
The LNK-IRS93 Series is an industrial-grade serial-to-fiber converter supporting RS232,
RS485, and RS422 protocols. It extends serial communication up to 2 km on multimode
fiber or 80 km on single-mode fiber, ensuring reliable, interference-free data transmission in
harsh industrial environments. Ideal for process control, stage lighting (DMX512), and traffic
systems, it provides plug-and-play operation with hot-swappable support and built-in
surge/ESD protection.
Features
Versatile Serial Support: RS232, RS485, RS422, fully transparent
Long-Distance Fiber Transmission: Up to 80 km on SMF, 2–5 km on MMF
High-Speed & Adaptive: Up to 2 Mbps, auto baud-rate, no configuration needed
Stage Lighting Ready: Supports high-speed DMX512 communication
Rugged Design: DIN-Rail & wall-mount, -40°C to +75°C operation
Reliable Protection: 15kV ESD, 1500W/sec surge protection
Diagnostics: LED indicators for easy monitoring
Technical Indexes
|
Model |
LNK-IRS93 Series |
|
Fiber Connector |
SC standard, ST/FC/LC optional |
|
Fiber Distance |
50/125um MMF: 2Km, 62.5/125um MMF: 5Km, 9/125 SMF:20/40/60/80Km |
|
Serial Interface |
Industrial Terminal |
|
Signal Ports |
1Ch RS232 - 1Mbps 1Ch R485 - 1Mbps 2Ch RS485H- 2Mbps 2Ch RS485H can be grouped into 1Ch High Speed RS422 |
|
|
EIA /TIA RS232/485/422 |
|
Serial Distance |
RS232: 15 meters, RS485/422: 1000 meters |
|
Rate |
Max 2Mbps |
|
RS-232 |
TXD, RXD, GND - Bi-directional |
|
RS-485 |
D+, D-, GND - Bi-directional |
|
Power Supply |
DC12~48V |
|
Power rate |
<5W |
|
Static protection |
15KV electric static discharge (ESD) protection |
|
Surge protection |
1500W/sec surge protection |
|
Operation Temperature |
-25°C to +75°C |
|
Storage Temperature |
-40°C to +85°C |
|
Storage Humidity |
5%~90% non-condescending |
|
Dimensions |
95(L)*70(W)*29(H) mm |
|
Weight |
0.25kg/pcs |
Ordering Information
|
Model |
Description |
|
LNK-IRS93-SFP |
Industrial Serial RS232/RS485/RS422 with SFP port |
|
LNK-IRS93-SCMM |
Industrial Serial RS232/RS485/RS422 , SC MM 850nm, 550m |
|
LNK-IRS93-SC20 |
Industrial Serial RS232/RS485/RS422 , SC SM 1310nm, 20km |
|
Mounting Options |
► Default DIN-Rail Bracket installed, Wall Mount Bracket is included. |
|
Power Options |
► Power Supply is to be purchased separately |
Application
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.

