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4K60 UHD Wireless HDMI Extender Kit with Multi-Receiver Support (Up to 4 Receivers)

EssentialGear
NEW
Shipping Q1 2026
BG-Air4Kast-MKX-972_876
U.S.-based Company
U.S.-based Company
Complimentary design services<br> and engineering support
Complimentary design services
and engineering support
3 year warranty
3 year warranty
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BZBGEAR Fundamentals
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Overview Specifications Interfaces Resources Package contents Trade In

Overview

The BG-Air4Kast-MKX is a 4K@60Hz UHD wireless HDMI KVM extender designed to deliver ultra-stable, low-latency video and audio transmission up to 164ft (50m). With support for keyboard, mouse, and touchscreen control, it enables seamless remote operation of PCs and laptops, making it the perfect solution for conference rooms, classrooms, digital signage, and home entertainment. Equipped with channel-switchable technology, HDMI loop-out on the transmitter, and multiple receiver support, the BG-Air4Kast-MKX ensures maximum flexibility for both professional and personal applications.

Features In Depth

The BG-Air4Kast-MKX combines ultra-HD video quality with advanced wireless control capabilities. Supporting resolutions up to 4K@60Hz, it ensures crystal-clear visuals with virtually no lag, ideal for gaming, streaming, and live presentations.

With HDMI loop-out, users can monitor content locally at the transmitter side while wirelessly extending the same signal to one or multiple receivers. The integrated KVM functionality supports real-time keyboard, mouse, and touchscreen operations over long distances, creating a smooth and responsive remote control experience.

For maximum reliability, the system offers channel-switchable transmission to minimize interference, ensuring uninterrupted connectivity even in environments with multiple wireless devices. Its compact design, plug-and-play setup, and wide compatibility make it a powerful tool for professional AV applications, education, and business scenarios.

Features

  • mdi_signal-distance-variant
    4K@60Hz Wireless Transmission
    Stable HDMI 2.0 signal extension up to 164ft (50m)
  • KVM
    KVM Support
    Remote control with keyboard, mouse, and touchscreen functionality
  • HDMI Loop Out
    HDMI Loop-Out
    Local monitoring at the transmitter side without signal interruption
  • AIRPLAY AND MIRACAST SUPPORT
    Channel Switchable
    Avoids interference and maintains a stable connection
  • Plug-and-Play Setup
    Plug-and-Play
    No drivers or software required, quick and simple installation
  • Wireless
    Multi-Receiver Support
    Connect one transmitter to multiple receivers for versatile applications
  • Supports resolutions up to 4K@60Hz, HDR compatible
  • Transmission distance: up to 164ft (50m) line-of-sight
  • Ultra-low latency for real-time control and presentations
  • Supports IR remote control pass-through
  • Compact, portable design suitable for mobile setups
  • Wide compatibility with PCs, laptops, game consoles, projectors, and displays
  • I/O Ports: HDMI IN, HDMI OUT (Loop), USB-A (Keyboard/Mouse), Power DC 5V
Home
Business
Outdoor Events
Classroom

The BG-Air4Kast-MKX HDMI wireless extender offers numerous benefits for home installations

Wireless Convenience

Enjoy seamless video transmission without cables, reducing clutter and offering convenience in home setups. Additionally, wireless connections are a bonus for households with children and pets!

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4K Content Enjoyment

Support for 4K content at 60Hz ensures high-resolution viewing without compromising quality. This is perfect for watching 4K content with the family or playing video games in 4K at a smooth 60Hz refresh rate for low-latency live action.

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Flexible Setup

With a 50-meter wireless range, users can freely arrange their home entertainment systems without cable length limitations, suitable for various setups like TVs, projectors, and gaming consoles.

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Wireless Convenience

Streamline presentations and meetings by eliminating the need for cables, ensuring a tidy and professional workspace.

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High-Resolution Content

Support for 4K content transmission at 60Hz guarantees crisp visuals during presentations, enhancing the quality of communication with clients or colleagues.

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Versatile Setup

With a wireless range of up to 50 meters, adapt your conference room or office layout without being restricted by cable lengths, accommodating various display setups and meeting configurations.

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Wireless Flexibility

Streamline outdoor setups by eliminating the need for lengthy cables, allowing for easy and quick installation of video displays without the hassle of cable management. The 5G connectivity further enhances this wireless transmission, providing a stronger connection for outdoor events.

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High-Quality Viewing

With support for 4K content transmission at 60Hz, deliver stunning visuals to outdoor screens or projectors, enhancing the audience's viewing experience during events like outdoor movie nights, concerts, or festivals.

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Extended Range

With a wireless transmission range of up to 50 meters, set up screens or projectors at various distances from the video source, providing flexibility in event layout and accommodating large outdoor venues.

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Seamless Integration

Eliminate classroom cable clutter, creating a neat and organized learning environment that promotes focus and student engagement.

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Enhanced Learning Experience

Transmit multimedia content from teachers' devices to large screens or projectors, providing students with clear and high-quality visuals that improve comprehension and retention of educational material.

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Flexible Setup

With a wireless range of up to 50 meters, educators can arrange their classroom layout without being constrained by cable lengths, allowing for dynamic and versatile teaching setups that cater to different learning activities and group sizes.

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The BG-AIR4KAST-MKX is Industry Compliant and Quality Tested

 

HDCP 1.4 / HDCP 2.2
HDCP (High-bandwidth Digital Content Protection) is crucial for securing the transmitted content over HDMI connections. Supporting both HDCP 1.4 and HDCP 2.2 ensures compatibility with a wide range of content sources, including older and newer devices.
Maximum Transfer Rate - 18Gbps
This high transfer rate ensures that the extender can handle the demanding data requirements of HDMI 2.0, including 4K resolution at higher refresh rates and HDR (High Dynamic Range) content.
SSID Pairing Supported
SSID pairing support streamlines the installation process without compromising security or reliability.
Wi-Fi Frequency Bands (5.18~5.24 GHz)
The BG-AIR4KAST-MKX operates on a less crowded frequency band, leading to better performance and reliability.
Transmission Distance (≤ 50m (164ft))
The BZBGEAR technical department has rigorously tested and verified the 50-meter transmission distance, guaranteeing users receive precisely what is promised.
IP color technology
This technology is crucial in ensuring accurate and vibrant color reproduction in wireless HDMI extender systems, contributing to an enhanced viewing experience for users.

Tech Specifications

HDMI
Performance
and Interface		 HDMI version HDMI 2.0
HDCP version HDCP 1.4 / HDCP 2.2
Maximum transfer rate 18Gbps
Resolution supported 4096x2160@24/30/50/60Hz, 3840x2160@24/30/50/60Hz,
1080P@50/60Hz, 720P@50/60Hz, 1920x1200
Input and output TMDS signal 0.7~1.2Vp-p (TMDS)
Input and output DDC signal 5Vp-p (TTL)
Transmission Wi-Fi Frequency bands 5.18~5.24 GHz
Transmission distance

One-to-one < 50m;  One-to-two < 30m;

One-to-three < 20m;  One-to-four < 15m
Latency 4K@60Hz: 120-180ms
1080P@60Hz: 70-120ms
For reference only, delays may vary
depending on the resolution, transmission
distance, and connection capacity
Connection types One-to-one
One-to-two
One-to-three
One-to-four
SSID pairing Supported
Protection Level ESD protection 1a Contact discharge level 3
1b Air discharge level 3
Standard: IEC61000-4-2
Lightning protection, Surge protection
IR Performance Infrared frequency 20~60kHz
Receiving range ≤ 5m
Operating
Environment		 Working temperature -4~140°F / -20~60°C
Storage temperature -22~158°F / -30~70°C
Humidity (no condensation) 0~90% RH
Power Supply Voltage/Current DC 5V/2A
Power consumption TX ≤ 5W, RX ≤ 4W
Physical Properties Dimension (W x L x H) TX: 4.5 x 4.9 x 0.81in [115 x 125 x 20.6mm]
RX: 4.5 x 4.9 x 0.81in [115 x 125 x 20.6mm]
Color Black
Material Iron
Net weight TX: 0.77 lbs [349g]; RX: 0.72 lbs [326g]

Resources

Documents
Download Download Brochure

PACKAGE CONTENTS

  • 1x BG-Air4Kast-MKX TX
  • 1x BG-Air4Kast-MKX RX (depending on package option)
  • 2x 5V2A Power Adapters
  • 1x IR Receiver Extension Cable
  • 1x IR Blaster Extension Cable
  • 4x Antenna
  • 4x Mounting Ears
  • 12x Screws
  • 1x User Manual

Interfaces

Interfaces image

Transmitter (TX)

  1. Power Indicator: Indicator lights up when power is applied.
  2. WiFi Indicator:
    a) Slow flash: waiting for connection
    b) Steady on: connection succeeded
    c) Quick flash: SSID Pairing mode.
  3. Signal Indicator:
    a) Light off: no HDMI signal
    b) Steady on: FIDMI signal is transmitting
    c) Quick flash: restore factory settings.
  4. KVM Indicator:
    a) Light flashing: The KVM data is transmitting
    b) Steady on: The computer and the USB port are connected.
  5. USB-A Port: Connect to the computer with USB cable.
  6. Channel Switch Button:
    a) Press to switch channels
    b) Press and hold 5s for SSID pairing
    c) Press and hold 10s for restore factory settings.
  7. Antenna Connectors: Connect with antennas.
  8. Micro USB Port: Used for firmware upgrade.
  9. HDMI Input: Connect with HDMI source device with HDMI cable.
  10. HDMI Output: Connect with local HDMI display device with HDMI cable.
  11. IR Out: Connect with IR blaster extension cable.
  12. Power Input: Connect with DC 5V/2A power adapter.
Interfaces image

Receiver (RX)

  1. Antenna Connectors: Connect with antennas.
  2. Micro USB Port: Used for firmware upgrade.
  3. HDMI Output: Connect with HDMI display device with HDMI cable.
  4. IR In: Connect with IR receiver extension cable.
  5. Power Input: Connect with DC 5V/2A power adapter.
  6. Power Indicator: Indicator lights up when power is applied.
  7. WiFi Indicator:
    a) Slow flash: waiting for connection
    b) Steady on: connection succeeded
    c) Quick flash: SSID Pairing mode.
  8. Signal Indicator:
    a) Light off: no HDMI signal
    b) Steady on: HDMI signal is transmitting
    c) Quick flash: restore factory settings.
  9. KVM Indicator:
    a) Light flashing: The KVM data is transmitting
    b) Steady on: The mouse and the keyboard are connected.
  10. USB-A Ports: Connect the mouse and the keyboard.
  11. Channel Switch Button:
    a) After connecting with TX, press to switch channels
    b) Press and hold 5s for SSID pairing
    c) Press and hold 10s for restore factory settings.

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