Product Details
Industrial 4Ch RS-232 Serial To Fiber Converter, SFP Port 12~48VDC
Power Input
Industrial Multi-Channel RS-232/422/485 Serial to Fiber Converters
Overview:
The E-link LNK-IRS series represents a cutting-edge
industrial-grade multi-protocol conversion platform, specifically
engineered for high-density serial communication requirements. This
advanced fiber optic converter supports flexible channel
configurations including 4-16 port RS232 interfaces, 4-16 channel
RS485 connections, and 2-8 channel RS422 communications, with
hybrid operation capabilities for mixed signal environments.
Featuring innovative modular architecture, the system enables
customized channel combinations such as 8RS232+8RS485,
8RS232+4RS422, or 8RS485+4RS422 configurations, providing
unparalleled flexibility for complex industrial automation
networks. The compact DIN-rail optimized design ensures
space-efficient installation while maintaining robust performance
in demanding environmental conditions.
Through its advanced fiber optic conversion technology, the system
achieves reliable transmission distances up to 2 kilometers using
multimode fiber and extends to 20 kilometers with single-mode fiber
infrastructure. This optical transmission methodology completely
eliminates electromagnetic interference, ground loop issues, and
lightning-induced damage, ensuring maximum data integrity and
communication security.
The converter delivers comprehensive electrical isolation between
all serial channels and fiber optic links, providing superior
protection for connected equipment in electrically noisy industrial
settings. Ideal for large-scale deployment in factory automation,
process control systems, intelligent transportation networks, and
professional lighting control applications, this high-density
solution establishes new standards for reliability in
mission-critical serial communication infrastructure.
Features
Robust Industrial Design
Flexible Fiber Connectivity
Supports multiple fiber optic interface types including SFP slots, FC, SC, and ST connectors, compatible with both multi-mode (2km) and single-mode (20km) fiber transmission.
Intelligent Data Handling
Wide Power Compatibility
Extended Environmental Endurance
Professional Control Protocol
Reliable Connection System
Long-Term Reliability
Application Scenarios
Factory Automation Networks
Enables multi-protocol device integration in automated production lines, supporting simultaneous connectivity for PLC systems, HMI panels, and motor drives through high-density serial ports with electrical isolation.
Utility Monitoring Systems
Facilitates substation automation and power grid telemetry by aggregating multiple protective relays and energy meters through mixed signal channels, providing surge-protected communication over fiber optic backbone.
Intelligent Transportation Infrastructure
Supports traffic management systems and railway signaling networks with multi-channel serial aggregation, delivering reliable sensor data collection and control signal distribution across widespread deployment areas.
Industrial Process Control
Connects distributed I/O modules and process instrumentation in chemical processing plants, enabling real-time monitoring of flow controllers and temperature sensors through noise-immune fiber links.
Stage & Architectural Lighting
Provides professional DMX512 control for theater lighting systems and facade illumination projects, supporting multiple lighting consoles and dimmer racks through high-speed serial channels.
Building Management Systems
Integrates legacy HVAC controllers, access control panels, and environmental sensors into modern IP-based BMS networks using hybrid serial channel configurations.
Technical Indexes
| RS232 Serial Interface |
| Physical interface | Industrial standard screw terminal |
| Data type | Up to 16Ch RS232 Bi-Direction |
| RS-232 signals | TxD, RxD, GND |
| Serial port line distance (copper) | 15 meters |
| Baud Rate | 0 ~ 800kbps |
| RS422 Serial Interface |
| Physical interface | Industrial standard screw terminal |
| Data type | Up to 8Ch RS422 Bi-Direction |
| RS-422 signals | Tx+, Tx-, Rx+, Rx-, GND |
| Serial port line distance (copper) | 1000 meters |
| Baud Rate | 0 ~ 800kbps |
| RS485 Serial Interface |
| Physical interface | Industrial standard screw terminal |
| Data type | Up to 16Ch RS485 Bi-Direction |
| RS-485 signals | Data+, Data-, GND |
| Serial port line distance (copper) | 1000 meters |
| Baud rate | 0 ~ 800kbps |
| Power Requirements |
| Power input | 12~48VDC |
| Power consumption | <6W |
| Power connector | Terminal block |
| Power protection | Reverse polarity protection |
| LED Indicator |
| PWR | Power Supply |
| FL | Fiber Link Status |
| Data 1~16 | Serial Data Signal |
| Mechanical |
| Dimensions (LxWxH) | 119 x 114 x 50mm |
| Weight | 0.55KG |
| Casing | Aluminum Case |
| Mounting Options | DIN-Rail Mount |
Ordering Information
| Model | Description |
| LNK-IRS232-C04-SFP | Industrial 4Ch RS-232 Serial to Fiber Converter, SFP Port (not
including SFP modules), -40°C ~ 80°C |
| Mounting Options | ► Default DIN-Rail Bracket installed |
| Power Options | ► DIN-Rail Power Supply. Open Wire for Terminal Block |
| ► Power Supply needs to be purchased separately |
Application Display Diagram
Company Profile
Established in 2001 & headquartered in Shenzhen, E-link China
Technology Co., Ltd. (E-link) is a leading manufacturer of fiber optic communication and video transmission products in China.
Our main products include:

- Fiber Media Converters
- Industrial Ethernet PoE switchs
- PoE Injectors & Splitters
- PoE Extenders
- Serial Fiber Converters
- SFP Transceivers
- HDMI Fiber Converters
- DVI Fiber Converters
- HD/3G/6G/12G Fiber Extenders
- CCTV Fiber Optic Converters
- HDMI/ DVI/ VGA/ SDI Ethernet Extenders
(Industrial PoE Actual Display)
With rich experience in providing high quality products in the
telecom and CCTV business, E-link has a large manufacturing factory
in Shenzhen, able to provide cost-effective solutions
to serve our customers successfully.
(Automatic Mechanical Equipment)
Since the launch of our products in domestic and international
markets, we have won a good reputation for our high-quality
products and sincere services. Our products are widely applied to
- System of Telecom
- Public Security
- Bank
- Smart City
- Public transportation
- New Energy Developing
- CCTV Monitoring Transmission
We also provide ODM & OEM services and we have cooperated with some famous companies all
over the world. Our own brand "E-link" is also well known in many countries and have distributors there.
(Customer visit)
E-Link quality:
- ISO9001 Quality System
- CE, RoHS, FCC certified
- 48 hours of weathering test before delivery
- Conduct full-spectrum environmental and electrical testing on all
product designs

Our knowledgeable sales, technical support and engineering
personnel are dedicated to understanding your needs and designing
products and solutions to meet your needs. We would be happy to
provide you with the best price, quality products and fast
delivery.