4K HDMI Fiber Extender Long Distance Transmission with RS232 and Stereo Audio

4K HDMI Fiber Extender Long Distance Transmission with RS232 and

Stereo Audio

Overview

The LNK-MHRA4K Series Mini 4K HDMI Fiber Extender with RS232 and External

Audio enables high-performance long-distance HDMI transmission over optical fiber

with crystal-clear 4K resolution. Designed for professional AV systems, it delivers

uncompressed and lossless HDMI 1.4a video, bidirectional RS232 data, and stereo

audio signals across fiber links of up to 80km, ensuring stable and interference-free

operation.

Utilizing 10Gbps high-speed optical transmission, the transmitter efficiently converts

HDMI and control signals into a single serial data stream for secure and high-quality delivery,

while the receiver restores them with exceptional accuracy. Featuring EMI/RFI immunity,

wide compatibility, and industrial-grade reliability, this compact HDMI over fiber extender

ensures zero signal degradation even in electrically noisy environments.

Compliant with RoHS environmental standards and lead-free manufacturing, the

LNK-MHRA4K Series is ideal for digital signage systems, large-scale video walls, control

centers, broadcast studios, and home theater applications that require

ultra-high-definition video and precise data synchronization over long fiber distances.

Features

Supports HDMI 1.4a and HDCP 1.2 standards, ensuring seamless compatibility with a wide

range of HDMI-enabled source and display devices for professional AV integration.

Delivers real-time, uncompressed video transmission with zero latency and no signal

loss, guaranteeing crystal-clear 4K image quality across extended fiber links.

Built-in DDC and HPD signal support for intelligent communication between source and

display, maintaining accurate resolution and format recognition.

High-speed optical data transfer up to 10.2Gbps, providing reliable and efficient bandwidth

for ultra-high-definition video and audio streaming applications.

Long-distance transmission up to 80km over single-mode fiber, ideal for environments

where copper-based cables cannot meet distance or interference requirements.

Supports 4K×2K@60Hz resolution (YUV 4:2:0), delivering sharp detail, vibrant color, and

superior video performance for both commercial and industrial use.

Integrated external stereo audio interface, allowing simultaneous transmission of

high-fidelity analog sound with digital video for a complete multimedia experience.

RS232 serial communication support, enabling remote device control, system monitoring,

or automation alongside HDMI video over a single fiber link.

Compact mini-size design with plug-and-play installation, making it easy to deploy in

space-constrained applications such as control rooms, meeting systems, and signage.

High immunity to EMI and RFI interference, ensuring stable, noise-free performance in

environments with high electrical or radio disturbances.

Durable construction with wide operating temperature range (-10°C to +50°C), suitable

for both indoor and semi-industrial environments requiring 24/7 reliability.

Technical Indexes

Ordering Information

Application

The Mini 4K HDMI Fiber Extender with RS232 & External Audio is engineered for

professional long-distance HDMI signal transmission where high resolution, signal

integrity, and electromagnetic immunity are critical. It is widely used in a variety of

commercial, industrial, and government communication systems, ensuring

uncompressed 4K video, RS232 control, and high-quality stereo audio over optical

fiber.

This device is ideal for use in large-screen display systems, digital signage networks,

and command and control centers, where real-time video and control data must be

transmitted over extended distances without latency or signal degradation. It is also

extensively applied in video conferencing systems, broadcast studios, and home

theater installations, providing stable, high-definition content delivery and superior

audiovisual performance.

In medical imaging, education and training facilities, and security surveillance

monitoring, the extender ensures precise image reproduction and reliable signal control,

even in high-interference or EMI-prone environments. Its compact design and

plug-and-play architecture make it especially suitable for rack-mounted AV systems,

industrial automation setups, and government or military communication

infrastructures where performance and reliability are paramount.

By integrating 4K HDMI transmission, RS232 serial control, and external stereo audio

over a single optical fiber, this extender provides a comprehensive and efficient solution

for long-distance AV signal extension, guaranteeing secure, interference-free, and

real-time communication in mission-critical applications.

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, CCTV over Ethernet Converters (HD-SDI over Ethernet, HDMI over Ethernet, Power over Ethernet), etc. With rich experience in providing high quality products in telecom and CCTV business, E-link has a large manufacturing base in Shenzhen, able to deliver cost-effective solutions to serve our customers successfully.

E-Link Quality:

• ISO9001 Quality System

• Full-Spectrum environment and electrical testing of all product design

• 48 hours aging test before delivery

• Qualified CE, RoHS, FCC

Since the launch of our products on the domestic market and international market, we have won a good reputation for our high quality products and sincere services. Our products are widely applied to network systems of Telecom, Radio and Television, Public Security, Bank ,ect. To be in line with different needs of different customers, we have people to trace the latest market information so as to keep our products competitive and vital.

Our knowledgeable sales, technical support and engineering staff are dedicated to understanding your requirements and designing products & solutions to meet your needs. We shall be pleased to provide you fiber optical network products with our best price, superior quality and fast delivery.