E-link China Technology Co., Ltd.
| Payment Terms | T/T, Western Union, MoneyGram, Paypal |
| Supply Ability | 1000pcs/Month |
| Delivery Time | 5-12working days |
| Packaging Details | Serial To Fiber Optic Media Converter Standard Export Package |
| Fiber Interface | SC / ST / FC / SFP |
| Transmission Range | 2Km (MMF), 20Km (SMF) |
| Serial Ports | Up to 16 RS232 / RS485 or 8 RS422 |
| Power Input | 12–48V DC, <6W |
| Protection | Reverse polarity, ESD, surge resistant |
| Housing | Aluminum, IP40, DIN-Rail mount |
| Brand Name | E-link |
| Model Number | LNK-IRS series |
| Certification | ISO9001, CE, RoHS, FCC |
| Place of Origin | Guangdong, China |
View Detail Information
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Product Specification
| Payment Terms | T/T, Western Union, MoneyGram, Paypal | Supply Ability | 1000pcs/Month |
| Delivery Time | 5-12working days | Packaging Details | Serial To Fiber Optic Media Converter Standard Export Package |
| Fiber Interface | SC / ST / FC / SFP | Transmission Range | 2Km (MMF), 20Km (SMF) |
| Serial Ports | Up to 16 RS232 / RS485 or 8 RS422 | Power Input | 12–48V DC, <6W |
| Protection | Reverse polarity, ESD, surge resistant | Housing | Aluminum, IP40, DIN-Rail mount |
| Brand Name | E-link | Model Number | LNK-IRS series |
| Certification | ISO9001, CE, RoHS, FCC | Place of Origin | Guangdong, China |
Industrial Multi-Channel RS232/422/485 Fiber Converter 2Km–20Km
Overview
The LNK-IRS Series delivers high-performance multi-channel serial-to-fiber conversion designed for
mission-critical industrial environments. Supporting up to 16 serial ports with flexible combinations of
RS232, RS485, and RS422, it provides secure and interference-free data transmission over fiber links
up to 20Km. With rugged aluminum housing, wide temperature tolerance, and fanless DIN-rail design,
it ensures long-term stability in automation, traffic, and stage lighting control systems.
Features
Flexible Port Options: Supports 4–16 RS232, 4–16 RS485, or 2–8 RS422 channels.
Configurable Mix: Custom combinations such as 8 RS232 + 8 RS485 or mixed RS232/RS422.
Reliable Fiber Extension: MMF up to 2Km, SMF up to 20Km with SC/ST/FC/SFP connectors.
Industrial Build: IP40 aluminum case, fanless cooling, DIN-rail mounting.
Rugged Protection: Reverse polarity, 15KV ESD, and surge immunity.
Wide Temp Range: Operates reliably from -40°C to +80°C.
Visual Monitoring: Power, fiber link, and channel activity LED indicators.
Long Service Life: MTBF over 216,000 hours, backed by 5-year warranty.
Technical Indexes
| Fiber Optical Interface | |
| Fiber interface | SFP, FC, SC or ST |
| Cable requirement | Multi-Mode: 50/125um, 62.5/125um Single-Mode: 9/125um |
| Fiber port | 1 Fiber Port |
| Transmission distance | Multi-Mode: 2km Single-Mode: 20km |
| Wavelength | 1310nm/1490nm/1550nm |
| 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 |
| Environmental | |
| Working Temperature | -40°C to 80°C (-40°F to 176°F) |
| Storage Temperature | -40°C to 85°C (-40°F to 185°F) |
| Working Humidity | 5%~95% (Non-Condensing) |
| MTBF | 216,388 Hours |
| Regulatory Approvals | |
| EMI | FCC Part15, CISPR (EN55022) Class A |
| EMS | EN61000-4-2 (ESD) Level 4, Criteria B EN61000-4-3 (RS) Level 3, Criteria A EN61000-4-4 (EFT) Level 3, Criteria A EN61000-4-5 (Surge) Level 3, Criteria B EN61000-4-6 (CS) Level 3, Criteria A |
| Shock / Freefall / Vibration | Shock: MIL-STD-810F Method 516.5 Free Fall: MIL-STD-810F Method 516.5 Vibration: MIL-STD-810F Method 514.5 C-1 & C-2 |
| Green | RoHS Compliant |
| Certifications: | FCC, CE |
Ordering Information
Industrial 4Ch RS232/485 or 2Ch RS422 Serial to Fiber Converter
| Model | Description |
| LNK-IRS232-C04-SFP | Industrial 4Ch RS-232 Serial to Fiber Converter, SFP Port (not including SFP modules), -40°C ~ 80°C |
| LNK-IRS232-C04 | Industrial 4Ch RS-232 Serial to Fiber Converter, Multi-Mode, 1310nm, Dual Fiber, 2KM, SC, -40°C ~ 80°C |
| LNK-IRS232-C04-20 | Industrial 4Ch RS-232 Serial to Fiber Converter, Single-Mode, 1310nm, Dual Fiber, 20KM, SC, -40°C ~ 80°C |
| LNK-IRS232-C04-S20A | Industrial 4Ch RS-232 Serial to Fiber Converter, Single-Mode, Single Fiber, 1310nm Tx/1550nm RX, 20KM, SC, -40°C ~ 80°C |
| LNK-IRS232-C04-S20B | Industrial 4Ch RS-232 Serial to Fiber Converter, Single-Mode, Single Fiber, 1550nm Tx/1310nm RX, 20KM, SC, -40°C ~ 80°C |
| LNK-IRS485-C04-SFP | Industrial 4Ch RS-485 Serial to Fiber Converter, SFP Port (not including SFP modules), -40°C ~ 80°C |
| LNK-IRS485-C04 | Industrial 4Ch RS-485 Serial to Fiber Converter, Multi-Mode, 1310nm, Dual Fiber, 2KM, SC, -40°C ~ 80°C |
| LNK-IRS485-C04-20 | Industrial 4Ch RS-485 Serial to Fiber Converter, Single-Mode, 1310nm, Dual Fiber, 20KM, SC, -40°C ~ 80°C |
| LNK-IRS485-C04-S20A | Industrial 4Ch RS-485 Serial to Fiber Converter, Single-Mode, Single Fiber, 1310nm Tx/1550nm RX, 20KM, SC, -40°C ~ 80°C |
| LNK-IRS485-C04-S20B | Industrial 4Ch RS-485 Serial to Fiber Converter, Single-Mode, Single Fiber, 1550nm Tx/1310nm RX, 20KM, SC, -40°C ~ 80°C |
| LNK-IRS422-C02-SFP | Industrial 2Ch RS-422 Serial to Fiber Converter, SFP Port (not including SFP modules), -40°C ~ 80°C |
| LNK-IRS422-C02 | Industrial 2Ch RS-422 Serial to Fiber Converter, Multi-Mode, 1310nm, Dual Fiber, 2KM, SC, -40°C ~ 80°C |
| LNK-IRS422-C02-20 | Industrial 2Ch RS-422 Serial to Fiber Converter, Single-Mode, 1310nm, Dual Fiber, 20KM, SC, -40°C ~ 80°C |
| LNK-IRS422-C02-S20A | Industrial 2Ch RS-422 Serial to Fiber Converter, Single-Mode, Single Fiber, 1310nm Tx/1550nm RX, 20KM, SC, -40°C ~ 80°C |
| LNK-IRS422-C02-S20B | Industrial 2Ch RS-422 Serial to Fiber Converter, Single-Mode, Single Fiber, 1550nm Tx/1310nm RX, 20KM, SC, -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 |
Notes:
1. FC, ST fiber port can be customized;
2. Can be configured with mixed signals, such as 2Ch RS232 + 2Ch RS485, 2Ch RS232 + 1Ch RS422,
2Ch RS485 + 1Ch RS422, etc
Industrial 8Ch RS232/485 or 4Ch RS422 Serial to Fiber Converter
| Model | Description |
| LNK-IRS232-C08-SFP | Industrial 8Ch RS-232 Serial to Fiber Converter, SFP Port (not including SFP modules), -40°C ~ 80°C |
| LNK-IRS232-C08 | Industrial 8Ch RS-232 Serial to Fiber Converter, Multi-Mode, 1310nm, Dual Fiber, 2KM, SC, -40°C ~ 80°C |
| LNK-IRS232-C08-20 | Industrial 8Ch RS-232 Serial to Fiber Converter, Single-Mode, 1310nm, Dual Fiber, 20KM, SC, -40°C ~ 80°C |
| LNK-IRS232-C08-S20A | Industrial 8Ch RS-232 Serial to Fiber Converter, Single-Mode, Single Fiber, 1310nm Tx/1550nm RX, 20KM, SC, -40°C ~ 80°C |
| LNK-IRS232-C08-S20B | Industrial 8Ch RS-232 Serial to Fiber Converter, Single-Mode, Single Fiber, 1550nm Tx/1310nm RX, 20KM, SC, -40°C ~ 80°C |
| LNK-IRS485-C08-SFP | Industrial 8Ch RS-485 Serial to Fiber Converter, SFP Port (not including SFP modules), -40°C ~ 80°C |
| LNK-IRS485-C08 | Industrial 8Ch RS-485 Serial to Fiber Converter, Multi-Mode, 1310nm, Dual Fiber, 2KM, SC, -40°C ~ 80°C |
| LNK-IRS485-C08-20 | Industrial 8Ch RS-485 Serial to Fiber Converter, Single-Mode, 1310nm, Dual Fiber, 20KM, SC, -40°C ~ 80°C |
| LNK-IRS485-C08-S20A | Industrial 8Ch RS-485 Serial to Fiber Converter, Single-Mode, Single Fiber, 1310nm Tx/1550nm RX, 20KM, SC, -40°C ~ 80°C |
| LNK-IRS485-C08-S20B | Industrial 8Ch RS-485 Serial to Fiber Converter, Single-Mode, Single Fiber, 1550nm Tx/1310nm RX, 20KM, SC, -40°C ~ 80°C |
| LNK-IRS422-C04-SFP | Industrial 4Ch RS-422 Serial to Fiber Converter, SFP Port (not including SFP modules), -40°C ~ 80°C |
| LNK-IRS422-C04 | Industrial 4Ch RS-422 Serial to Fiber Converter, Multi-Mode, 1310nm, Dual Fiber, 2KM, SC, -40°C ~ 80°C |
| LNK-IRS422-C04-20 | Industrial 4Ch RS-422 Serial to Fiber Converter, Single-Mode, 1310nm, Dual Fiber, 20KM, SC, -40°C ~ 80°C |
| LNK-IRS422-C04-S20A | Industrial 4Ch RS-422 Serial to Fiber Converter, Single-Mode, Single Fiber, 1310nm Tx/1550nm RX, 20KM, SC, -40°C ~ 80°C |
| LNK-IRS422-C04-S20B | Industrial 4Ch RS-422 Serial to Fiber Converter, Single-Mode, Single Fiber, 1550nm Tx/1310nm RX, 20KM, SC, -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 |
Notes:
1. FC, ST fiber port can be customized;
2. Can be configured with mixed signals, such as 4Ch RS232 + 4Ch RS485, 4Ch RS232 + 2Ch RS422,
4Ch RS485 + 2Ch RS422, etc
Industrial 12Ch RS232/485 or 6Ch RS422 Serial to Fiber Converter
| Model | Description |
| LNK-IRS232-C12-SFP | Industrial 12Ch RS-232 Serial to Fiber Converter, SFP Port (not including SFP modules), -40°C ~ 80°C |
| LNK-IRS232-C12 | Industrial 12Ch RS-232 Serial to Fiber Converter, Multi-Mode, 1310nm, Dual Fiber, 2KM, SC, -40°C ~ 80°C |
| LNK-IRS232-C12-20 | Industrial 12Ch RS-232 Serial to Fiber Converter, Single-Mode, 1310nm, Dual Fiber, 20KM, SC, -40°C ~ 80°C |
| LNK-IRS232-C12-S20A | Industrial 12Ch RS-232 Serial to Fiber Converter, Single-Mode, Single Fiber, 1310nm Tx/1550nm RX, 20KM, SC, -40°C ~ 80°C |
| LNK-IRS232-C12-S20B | Industrial 12Ch RS-232 Serial to Fiber Converter, Single-Mode, Single Fiber, 1550nm Tx/1310nm RX, 20KM, SC, -40°C ~ 80°C |
| LNK-IRS485-C12-SFP | Industrial 12Ch RS-485 Serial to Fiber Converter, SFP Port (not including SFP modules), -40°C ~ 80°C |
| LNK-IRS485-C12 | Industrial 12Ch RS-485 Serial to Fiber Converter, Multi-Mode, 1310nm, Dual Fiber, 2KM, SC, -40°C ~ 80°C |
| LNK-IRS485-C12-20 | Industrial 12Ch RS-485 Serial to Fiber Converter, Single-Mode, 1310nm, Dual Fiber, 20KM, SC, -40°C ~ 80°C |
| LNK-IRS485-C12-S20A | Industrial 12Ch RS-485 Serial to Fiber Converter, Single-Mode, Single Fiber, 1310nm Tx/1550nm RX, 20KM, SC, -40°C ~ 80°C |
| LNK-IRS485-C12-S20B | Industrial 12Ch RS-485 Serial to Fiber Converter, Single-Mode, Single Fiber, 1550nm Tx/1310nm RX, 20KM, SC, -40°C ~ 80°C |
| LNK-IRS422-C06-SFP | Industrial 6Ch RS-422 Serial to Fiber Converter, SFP Port (not including SFP modules), -40°C ~ 80°C |
| LNK-IRS422-C06 | Industrial 6Ch RS-422 Serial to Fiber Converter, Multi-Mode, 1310nm, Dual Fiber, 2KM, SC, -40°C ~ 80°C |
| LNK-IRS422-C06-20 | Industrial 6Ch RS-422 Serial to Fiber Converter, Single-Mode, 1310nm, Dual Fiber, 20KM, SC, -40°C ~ 80°C |
| LNK-IRS422-C06-S20A | Industrial 6Ch RS-422 Serial to Fiber Converter, Single-Mode, Single Fiber, 1310nm Tx/1550nm RX, 20KM, SC, -40°C ~ 80°C |
| LNK-IRS422-C06-S20B | Industrial 6Ch RS-422 Serial to Fiber Converter, Single-Mode, Single Fiber, 1550nm Tx/1310nm RX, 20KM, SC, -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 |
Notes:
1. FC, ST fiber port can be customized;
2. Can be configured with mixed signals, such as 6Ch RS232 + 6Ch RS485, 6Ch RS232 + 3Ch RS422,
6Ch RS485 + 3Ch RS422, etc
Industrial 16Ch RS232/485 or 8Ch RS422 Serial to Fiber Converter
| Model | Description |
| LNK-IRS232-C16-SFP | Industrial 16Ch RS-232 Serial to Fiber Converter, SFP Port (not including SFP modules), -40°C ~ 80°C |
| LNK-IRS232-C16 | Industrial 16Ch RS-232 Serial to Fiber Converter, Multi-Mode, 1310nm, Dual Fiber, 2KM, SC, -40°C ~ 80°C |
| LNK-IRS232-C16-20 | Industrial 16Ch RS-232 Serial to Fiber Converter, Single-Mode, 1310nm, Dual Fiber, 20KM, SC, -40°C ~ 80°C |
| LNK-IRS232-C16-S20A | Industrial 16Ch RS-232 Serial to Fiber Converter, Single-Mode, Single Fiber, 1310nm Tx/1550nm RX, 20KM, SC, -40°C ~ 80°C |
| LNK-IRS232-C16-S20B | Industrial 16Ch RS-232 Serial to Fiber Converter, Single-Mode, Single Fiber, 1550nm Tx/1310nm RX, 20KM, SC, -40°C ~ 80°C |
| LNK-IRS485-C16-SFP | Industrial 16Ch RS-485 Serial to Fiber Converter, SFP Port (not including SFP modules), -40°C ~ 80°C |
| LNK-IRS485-C16 | Industrial 16Ch RS-485 Serial to Fiber Converter, Multi-Mode, 1310nm, Dual Fiber, 2KM, SC, -40°C ~ 80°C |
| LNK-IRS485-C16-20 | Industrial 16Ch RS-485 Serial to Fiber Converter, Single-Mode, 1310nm, Dual Fiber, 20KM, SC, -40°C ~ 80°C |
| LNK-IRS485-C16-S20A | Industrial 16Ch RS-485 Serial to Fiber Converter, Single-Mode, Single Fiber, 1310nm Tx/1550nm RX, 20KM, SC, -40°C ~ 80°C |
| LNK-IRS485-C16-S20B | Industrial 16Ch RS-485 Serial to Fiber Converter, Single-Mode, Single Fiber, 1550nm Tx/1310nm RX, 20KM, SC, -40°C ~ 80°C |
| LNK-IRS422-C08-SFP | Industrial 8Ch RS-422 Serial to Fiber Converter, SFP Port (not including SFP modules), -40°C ~ 80°C |
| LNK-IRS422-C08 | Industrial 8Ch RS-422 Serial to Fiber Converter, Multi-Mode, 1310nm, Dual Fiber, 2KM, SC, -40°C ~ 80°C |
| LNK-IRS422-C08-20 | Industrial 8Ch RS-422 Serial to Fiber Converter, Single-Mode, 1310nm, Dual Fiber, 20KM, SC, -40°C ~ 80°C |
| LNK-IRS422-C08-S20A | Industrial 8Ch RS-422 Serial to Fiber Converter, Single-Mode, Single Fiber, 1310nm Tx/1550nm RX, 20KM, SC, -40°C ~ 80°C |
| LNK-IRS422-C08-S20B | Industrial 8Ch RS-422 Serial to Fiber Converter, Single-Mode, Single Fiber, 1550nm Tx/1310nm RX, 20KM, SC, -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 |
Notes:
1. FC, ST fiber port can be customized;
2. Can be configured with mixed signals, such as 8Ch RS232 + 8Ch RS485, 8Ch RS232 + 4Ch RS422,
8Ch RS485 + 4Ch RS422, etc
Data Channel Rate Table
| Data Channel | Measured error-free baud rate (bps) | Maximum supported baud rate (Kbps) | Typical application |
| 1 | 460800 | 800 | Stage lighting control system DMX512-500Kbps, security monitoring, fire alarm, industrial control, etc. |
| 2 | 460800 | 800 | Stage lighting control system DMX512-500Kbps, security monitoring, fire alarm, industrial control, etc. |
| 3 | 230400 | 250 | Security monitoring, fire alarm, industrial control, etc. |
| 4 | 230400 | 250 | Security monitoring, fire alarm, industrial control, etc. |
| 5 | 460800 | 800 | Stage lighting control system DMX512-500Kbps, security monitoring, fire alarm, industrial control, etc. |
| 6 | 460800 | 800 | Stage lighting control system DMX512-500Kbps, security monitoring, fire alarm, industrial control, etc. |
| 7 | 230400 | 250 | Security monitoring, fire alarm, industrial control, etc. |
| 8 | 230400 | 250 | Security monitoring, fire alarm, industrial control, etc. |
| 9 | 460800 | 500 | Stage lighting control system DMX512-500Kbps, security monitoring, fire alarm, industrial control, etc. |
| 10 | 460800 | 500 | Stage lighting control system DMX512-500Kbps, security monitoring, fire alarm, industrial control, etc. |
| 11 | 230400 | 250 | Security monitoring, fire alarm, industrial control, etc. |
| 12 | 230400 | 250 | Security monitoring, fire alarm, industrial control, etc. |
| 13 | 230400 | 250 | Security monitoring, fire alarm, industrial control, etc. |
| 14 | 230400 | 250 | Security monitoring, fire alarm, industrial control, etc. |
| 15 | 230400 | 250 | Security monitoring, fire alarm, industrial control, etc. |
| 16 | 230400 | 250 | Security monitoring, fire alarm, industrial control, etc. |
Application
Company Details
Business Type:
Manufacturer
Year Established:
2001
Total Annual:
10000000-20000000
Employee Number:
100~150
Ecer Certification：
Verified Supplier
Established in 2001& headquartered in Shenzhen, E-link China Technology Co., Ltd. (E-link) is a leading Fiber Optic Communication and CCTV Security Transmission product manufacturer in China. Our main products include active equipments including fiber media converters, CCTV fiber converters... Established in 2001& headquartered in Shenzhen, E-link China Technology Co., Ltd. (E-link) is a leading Fiber Optic Communication and CCTV Security Transmission product manufacturer in China. Our main products include active equipments including fiber media converters, CCTV fiber converters...
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