CNV-LKV844

Overview

4x4 HDMI Matrix Extender 4K 60Hz Over Cat6 with 70m Range
Designed for professional AV distribution, the Lenkeng LKV844 delivers reliable 4x4 HDMI matrix switching with extended signal transmission over network cable. It enables four HDMI sources to be routed independently to four displays, while simultaneously extending signals up to 70 meters using Cat6, Cat6A, or Cat7 cabling. With support for 4K at 60Hz and full 4:4:4 chroma, this system maintains image integrity across both local and remote displays.

The integrated HDMI loop-outs allow for local monitoring at the source, while remote receivers ensure consistent signal delivery across longer distances. Control flexibility is a key advantage, offering RS232, Ethernet, front panel buttons, and remote control options for seamless system integration in commercial or technical environments.

Description

The LKV844 4x4 HDMI matrix extender is engineered for environments that demand high performance video distribution and flexible routing. It supports ultra high definition resolutions up to 4K at 60Hz, ensuring sharp visuals and accurate colour reproduction. Using a single CAT cable per channel, it extends HDMI signals up to 70 meters without noticeable degradation. Power over cable simplifies installation by reducing the need for additional power supplies at receiver units.

This solution is well suited for control rooms, digital signage, conference facilities, education spaces, and security installations where multiple sources need to be displayed across multiple screens with minimal latency and maximum reliability.

Features

Flexible Signal Routing and Distribution
The system allows any of the four HDMI inputs to be assigned to any of the four outputs, providing full matrix switching capability. This enables dynamic content distribution across multiple displays without the need to rewire connections. The additional HDMI loop-out ports on the transmitter provide convenient local output for monitoring or duplication.

• 4 HDMI inputs routed to 4 independent HDMI outputs
• 4 HDMI loop-out ports for local display or monitoring
• Simultaneous local and extended output functionality

Extended Transmission Over Network Cable
Using standard network cabling, the unit extends high bandwidth HDMI signals over long distances while maintaining signal stability and quality.

• Transmission distance up to 70 meters at 4K 60Hz
• Compatible with Cat6, Cat6A, and Cat7 cables
• Power over cable from transmitter to receivers

High Resolution Video and Audio Support
The system supports a wide range of resolutions and audio formats, making it suitable for both modern UHD content and legacy systems.

• Maximum resolution up to 3840x2160 at 60Hz and 4096x2160 at 25Hz
• HDR10 support for enhanced contrast and colour depth
• Video bandwidth up to 18Gbps
• Audio formats include LPCM, DTS-HD, DTS Audio, Dolby Digital 5.1CH and Dolby Atmos

Control and Integration Options
Multiple control interfaces provide flexibility for integration into automated AV systems or manual operation setups.

• RS232 control for professional system integration
• Ethernet control for network-based management
• Front panel buttons for direct access
• Remote control for convenient operation

Key Technical Details

• HDMI standard: HDMI 2.0 with HDCP 2.2 and 1.4 compatibility
• Transmission media: Cat6, Cat6A, Cat7
• IR passback: unidirectional support
• S/PDIF audio output available on receiver units
• EDID management via DIP switch on transmitter
• Input TMDS signal: 0.5 to 1.2Vp-p
• Input DDC signal: 5Vp-p

Physical and Environmental Characteristics

• Transmitter dimensions: 411 x 147 x 29 mm
• Receiver dimensions: 105.5 x 20.5 x 20 mm
• Construction: durable metal housing
• Colour: black
• Power supply: DC 12V 3A
• Total power consumption: up to 30W
• Operating temperature: -20 to 60 degrees C
• Storage temperature: -30 to 70 degrees C
• Humidity tolerance: 0 to 90 percent RH non condensing

Protection and Reliability
Built for stable operation in demanding environments, the unit includes multiple protection mechanisms.

• ESD protection with contact discharge up to 4kV and air discharge up to 8kV
• Integrated lightning and surge protection
• Compliance with IEC61000-4-2 standards

Typical Use Cases
This matrix extender is commonly deployed in scenarios where multi-display distribution is required with high reliability and control.

• Security monitoring systems
• Educational facilities and lecture halls
• Corporate meeting and conference rooms
• Exhibition and event spaces
• Digital signage networks

Part Number / SKU: CNV-LKV844

Specifications

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Specifications
Product Code	CNV-LKV844
HDMI version	HDMI 2.0
HDCP version	HDCP 2.2, HDCP 1.4
Transmission media	Cat6/Cat6A/Cat7
Transmission distance	<=70m
Video bandwidth	600MHz (18Gbps)
Resolution supported	3840 x 2160@24/25/30/50/60Hz, 4096 x 2160@24/25Hz, 1080i@50/60Hz, 1080p@50/60Hz, 720p@50/60Hz, 576i@50Hz, 576p@50Hz, 480i@60Hz, 480p@60Hz, 3440 x 1440, 2560 x 1440, 2560 x 1080, 2048 x 1080, 1920 x 1440, 1280 x 960, 1280 x 800, 1280 x 768, 1680 x 1050, 1360 x 768, 1366 x 768, 1600 x 900, 1024 x 768, 800 x 600
HDR10	Yes
HDMI loop-out	TX : Yes
IR passback	Unidirectional
S/PDIF audio separation	RX : Yes
EDID DIP switch	TX : Yes
Audio format supported	LPCM/DTS-HD/DTS-Audio/Dolby Digital 5.1CH/Dolby Atmos
Input TMDS signal	0.5~1.2Vp-p
Input DDC Signal	5Vp-p
RS-232 control	Yes
Ethernet control	Yes
Remote control	Yes
Power over cable (PoC)	TX to RX
HDMI interface	Type-A 19 Pins, Female
Case material	Iron
Dimensions	TX: 411.0(L) x 147.0(W) x 29.0(H) mm
	RX: 105.5(L) x 02.5(W) x 20(H) mm
Weight	TX :1530g , RX: 243g
Color	Black
Power supply	DC12V/3A
Consumption	TX+RX<=30W
Working temperature	-20~60degreesC
Storage temperature	-30~70degreesC
Humidity (no condensation)	0~90%RH (no condensation)
Protection	ESD protection
	1a Contact discharge level 2 (±4KV)
	1b Air discharge level 3 (±8KV)
	Implementation of the standard: IEC61000-4-2
	Lightning protection, Surge protection