Smartlinx Wireless HDMI Transmitter and Receiver – 1TX+4RX Plug &Play

The kit includes 1 transmitter and 4 factory-paired receivers. It accepts up to 3840×2160 at 30Hz and outputs up to 1920×1080 at 60Hz.The system does not require an existing Wi-Fi network, router, internet connection, mobile app or dedicated driver for normal HDMI operation.

Key Product Facts

Attribute	Value
Configuration	1 transmitter + 4 receivers
Input	Up to 3840×2160 at 30Hz
Output	Up to 1920×1080 at 60Hz
Wireless	2.4GHz + 5GHz, automatic band selection
Open range	Up to 165 ft / 50 m
Through walls	Up to 50 ft / 15 m, excluding thick walls and large obstacles
Latency	Approximately 100ms
Encoding	H.264 / H.265/HEVC
Audio	Embedded stereo HDMI
ARC/eARC	Not supported
HDR	Not supported
Power	5V/1A per unit through USB-C
Maximum draw	2.61W per unit
Existing Wi-Fi	Not required
Pairing	Factory-paired

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What Is a Wireless HDMI Extender?

A wireless hdmi video transmitter is a device that transmits HDMI video and audio wirelessly from a source device to a TV, monitor or projector without using a physical HDMI cable. The transmitter connects to the source HDMI output and encodes the signal. The receiver connects to the display HDMI input and decodes the signal. The display treats the receiver as an ordinary HDMI input.

HDMI is licensed by HDMI Licensing Administrator and appears on consumer electronics, computers, and commercial AV equipment, including laptops, cameras, media players, and televisions. A HDMI wireless extender carries that signal across a radio path rather than a copper path.

HDMI Source (laptop, camera, media player)

        ↓  HDMI  —  up to 4K 30Hz

Transmitter (TX)  —  encodes, 5V/1A power

        ↓  2.4GHz / 5GHz wireless link

Receiver (RX) ×4  —  decode, 5V/1A power each

        ↓  HDMI  —  1080p 60Hz

HDMI Displays (television, monitor, projector)

Three wireless display architectures differ in transport. A wireless HDMI extender creates its own point-to-multipoint radio link between dedicated hardware. An HDMI-over-Ethernet extender carries the signal across Cat5e or Cat6 cable. A wireless hdmi display adapter uses an existing Wi-Fi network and a casting protocol, such as Miracast or AirPlay. The Smartlinx system belongs to the first category.

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Specifications

Video

Attribute	Value
Maximum input resolution	3840×2160 at 30Hz
Maximum output resolution	1920×1080p
Refresh rate at 1080p	60Hz
4K output	Not supported. 4K 30Hz input is accepted and downscaled to 1080p
Video encoding	H.264, H.265/HEVC
HDR	Not supported

Wireless

Attribute	Value
Frequency bands	2.4GHz and 5GHz
Band selection	Automatic
Range, open environment	165 ft / 50 m
Range, through interior walls	50 ft / 15 m, excluding thick walls and large obstacles
Line-of-sight requirement	Required for the open-environment figure
Pairing	Factory pre-paired
Existing network required	No

Performance

Attribute	Value
Latency	0.1 seconds (100ms)
Maximum receivers per transmitter	4
Maximum transmitters per receiver	1
Multi-display behaviour	Identical content on all receivers

Audio

Attribute	Value
Audio transport	Embedded across HDMI
Simultaneous video and audio	Supported
Stereo	Supported
ARC / eARC	Not supported

Physical and power

Attribute	Value
Transmitter connectors	HDMI plug, USB-C power input
Receiver connectors	HDMI plug, USB-C power input
Antennas	Dual external fold-out
Controls	Push button, LED status indicator
Colour	Black
Input voltage and current	5V DC, 1A per unit
Maximum draw per unit	2.61W
Total draw, 5 units	Approximately 13W
Power adapters included	No

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Features of the Smartlinx Best Wireless HDMI Extender & Receiver kit

The Smartlinx HDMI wireless extender provides 7 documented features: four receiver distribution, dual band transmission, factory pairing, an independent wireless link, H.265/HEVC encoding with 4K input support, USB-C power and included HDMI adapters.

Four receiver distribution. One transmitter feeds up to 4 receivers simultaneously. Each receiver connects to its own display. This configuration replaces an HDMI splitter plus four separate cable runs.

Dual band wireless transmission. The system operates across 2.4GHz and 5GHz and selects the band automatically. The 5GHz band carries higher throughput across shorter distances. The 2.4GHz band carries lower throughput across longer distances and penetrates obstacles more effectively. Both bands are defined for unlicensed use and are documented by the Wi-Fi Alliance for wireless networking equipment sharing the same spectrum.

Factory pairing. All 5 units ship paired. Connecting power and HDMI establishes the link, without a pairing procedure, an app or a configuration step.

Independent wireless link. The hdmi wireless transmitter and receiver create their own connection. The system joins no existing Wi-Fi network and requires no router and no internet access. Deployment involves no network provisioning, no VLAN assignment and no IT approval of a network-attached device.

H.265/HEVC video encoding with 4K input support. The transmitter accepts sources up to 3840×2160 at 30Hz, encodes using H.264 or H.265/HEVC and each receiver decodes to 1920×1080p at 60Hz. A 4K source connects without changing its output setting. H.265/HEVC delivers a given image quality at a lower bitrate than H.264, which supports stable transmission in a congested RF environment.

USB-C power. Each transmitter and receiver draws 5V at 1A across a USB-C connector and consumes a maximum of 2.61W. The USB-C connector is standardised by the USB Implementers Forum. Five USB-C cables are supplied.

Included HDMI adapters. One Mini HDMI adapter and one Micro HDMI adapter connect the transmitter to compact source devices, including cameras and handheld recorders carrying those connectors instead of full-size HDMI.

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What Devices Are Compatible With the Smartlinx Wireless Transmitter and Receiver System?

Compatibility depends primarily on the source connector and output resolution. The system accepts HDMI, Mini HDMI and Micro HDMI sources at 1080p 60Hz or 4K 30Hz. While displays require an available HDMI input. Protected content compatibility should be confirmed separately.

Which Source Devices Work With the System?

Source	Required output	Compatibility
Laptop	HDMI at 1080p 60Hz or 4K 30Hz	Compatible
Desktop PC	HDMI at 1080p 60Hz or 4K 30Hz	Compatible
Camera	HDMI, Mini HDMI, or Micro HDMI at 1080p 60Hz or 4K 30Hz	Compatible — both adapters included
Media player	HDMI at 1080p 60Hz or 4K 30Hz	Compatible
Game console	HDMI at 1080p 60Hz or 4K 30Hz	Compatible for gameplay, subject to latency
USB-C laptop	DisplayPort Alt Mode plus adapter	Adapter required, purchased separately

For streaming devices, cable boxes, set-top boxes and Blu-ray players, confirm HDCP compatibility before purchase.

Connecting a PC or laptop to a television. The transmitter connects to the computer HDMI output. A receiver connects to the television HDMI input. Windows and macOS treat the transmitter as a connected display and require no driver. The computer output resolution requires setting it to 1080p 60Hz or 4K 30Hz.

Connecting a video camera. Cameras carrying Mini HDMI or Micro HDMI outputs connect across the included adapters. A camera recording in 4K connects at its 4K 30Hz output setting without reconfiguration, and the monitoring display shows 1080p. Cameras set to 1080p 60Hz produce smoother motion on the monitoring display.This makes the system suitable as a wireless transmitter for hdmi video camera setup.

Connecting a USB-C source. USB-C carries video only across DisplayPort Alt Mode, a mode defined by VESA and implemented at the discretion of each device manufacturer. USB-C is a connector specification from the USB Implementers Forum and carries no guarantee of video output. A USB-C port lacking DisplayPort Alt Mode produces no image.

Which Displays Work With the System?

Display	Required input	Compatibility
Television	HDMI	Compatible
Computer monitor	HDMI	Compatible
Projector	HDMI	Compatible
Commercial signage display	HDMI	Compatible
Interactive display	HDMI	Compatible as a display. Touch-back not carried

Each receiver requires a 5V/1A power source near its display. Every display receives 1920×1080p at 60Hz, including 4K displays.

Which Operating Systems Work With the System?

The source device HDMI output determines compatibility rather than the operating system, because the transmitter accepts an HDMI signal already generated by the source hardware. Windows and macOS both present the transmitter as a connected display. No driver, application, or software installation is required on either platform.

Operating system	Behaviour
Windows	The transmitter appears as a connected display. Duplicate and extend modes selected in Display Settings
macOS	The transmitter appears as a connected display. Mirror and extended desktop selected in Displays preferences

Extended desktop across four receivers. The transmitter presents as one display to the source device. Extended desktop mode produces a single extended display and all four receivers show that same extended display. The system creates no independent desktops.

Does the Smartlinx Wireless HDMI System Work With Netflix, Disney+ and Other Protected Content?

Protected content playback depends on HDCP compliance across every device in the signal path. HDCP is administered by Digital Content Protection LLC and applies at the source, at every intermediate device, and at the display. Netflix documents that HDCP problems prevent protected content from playing. Disney+ documents that compatible HDCP components are required for high-quality protected playback.

HDCP support for this system is not currently published. Smartlinx support confirms HDCP behaviour on request, and confirmation is advisable before purchase for use with a streaming device, a cable box, a set-top box, or a Blu-ray player. A display shows a black screen or an error message rather than the content, where a source applies HDCP and any device in the path lacks the required version. This behaviour is a property of the content protection standard and not a fault in the wireless link.

Which Cables and Adapters Are Required?

Item	Included	Required for
USB-C power cable	Yes, 5	Powering each unit
USB power adapter	No	Every unit requires a 5V/1A source
Mini HDMI adapter	Yes, 1	Cameras and devices with Mini HDMI
Micro HDMI adapter	Yes, 1	Devices with Micro HDMI
HDMI cable	No	Unnecessary — both units are HDMI plugs
HDMI extension cable	No	Optional, for restricted clearance behind a wall-mounted display
USB-C to HDMI adapter	No	USB-C sources with DisplayPort Alt Mode
DisplayPort to HDMI adapter	No	DisplayPort-only sources

What Is Not Compatible With the Smartlinx Wireless HDMI System?

Seven device categories are incompatible, in each case because of connector type, resolution, or pairing architecture.

	Reason
DisplayPort-only source without an adapter	The transmitter accepts HDMI only
DVI-only source or display	DVI carries no audio and requires an adapter
VGA source or display	VGA is analogue
Source locked to 4K 60Hz	The transmitter accepts up to 4K 30Hz
USB-C port lacking DisplayPort Alt Mode	The port carries no video signal
Display without an HDMI input	The receiver outputs HDMI only
A second transmitter on the same receiver	Each receiver pairs with one transmitter

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Does the Smartlinx Wireless HDMI System Support 4K?

The system accepts a 4K input and outputs 1080p. The transmitter accepts sources up to 3840×2160 at 30Hz and downscales them. So a 4K source connects without changing its output setting. Every connected display shows 1920×1080p at 60Hz.

Signal stage	Resolution
Maximum accepted at the transmitter	3840×2160 at 30Hz
Transmitted across the wireless link	Encoded H.264 or H.265/HEVC
Delivered at each receiver	1920×1080p at 60Hz

Input resolution and output resolution are separate attributes. A system that accepts 4K input and outputs 1080p displays a 1080p image. The output resolution determines what appears on the screen. Products in this category are frequently marketed on the input figure alone, so the output specification and the refresh rate attached to it both merit comparison.

A 1080p 60Hz source produces smoother motion than a 4K 30Hz source. The frame rate carries through the link unchanged. So a 4K 30Hz input arrives at 30 frames per second while a 1080p 60Hz input arrives at 60. For video playback, sport and any content with movement, feeding 1080p 60Hz gives the better result.

Sources locked to 4K 60Hz require their output set to 4K 30Hz or 1080p 60Hz. A source that cannot be set to either produces no image.A deployment requiring 4K output at the display requires a 4K wireless HDMI product. This system is specified for 1080p 60Hz output.

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What Connectors Does the Smartlinx Wireless HDMI System Have?

The Smartlinx transmitter and each receiver carry 4 physical elements each: an HDMI plug, a USB-C power input, a push button, and an LED indicator. The HDMI plug carries video and audio. The USB-C connector carries power only.

Transmitter

Connector	Function
HDMI plug	Video and audio input from the source device, up to 4K 30Hz
USB-C	Power input, 5V / 1A. Carries no data
Push button	Pairing control
LED	Link status

Receiver

Connector	Function
HDMI plug	Video and audio output to the display, 1080p 60Hz
USB-C	Power input, 5V / 1A. Carries no data
Push button	Pairing control
LED	Link status

The USB-C connector accepts no video source and connects to no USB-C laptop for video. Three connector functions are absent from both units: HDMI loop-through, IR pass-through, and analogue audio output.

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Wireless HDMI Transmitter and Receiver FAQs

Does the System Support 4K?

The system accepts a 4K input and outputs 1080p. The transmitter accepts sources up to 3840×2160 at 30Hz and downscales them, so a 4K source connects without changing its output setting. Every display shows 1920×1080p at 60Hz. A 1080p 60Hz source produces smoother motion than a 4K 30Hz source, because the frame rate carries through the link unchanged.

Does the Smartlinx Wireless HDMI System Work Through Walls?

Yes. The system is specified to transmit up to 50 ft / 15 m through interior walls, excluding thick walls and large obstacles. Actual performance depends on wall construction and the surrounding RF environment.

Placement steps that can improve performance:

1. Position the transmitter and receiver at similar heights.
2. Keep both units clear of metal enclosures, equipment racks, and cabinet doors.
3. Extend the fold-out antennas and orient them vertically.
4. Reduce the number of walls in the path where possible.
5. Test link stability through a full playback cycle before permanent mounting.

Does the System Support Audio Pass-Through?

Yes. The system carries stereo audio embedded in the HDMI signal, transmitted together with the video over the same link. Multichannel passthrough is not specified, and ARC/eARC are not supported.

Audio attribute	Support
Embedded HDMI audio	Supported
Simultaneous video and audio	Supported
Stereo (2-channel PCM)	Supported
Multichannel passthrough	Not specified
ARC / eARC	Not supported

The receiver sends audio to the display through wireless sender hdmi . A separate connection is required where audio must return from the display to an AV receiver.

How Many Displays Can One Wireless HDMI Transmitter Feed?

One Smartlinx transmitter feeds up to 4 receivers simultaneously. All receivers are factory-paired and each connects to its own HDMI display.This makes the system a wireless hdmi transmitter multiple receivers solution.Every receiver shows identical content from the same source. The system does not create independent desktops or separate sources for individual displays. Each receiver requires its own 5V/1A power source.

Can the System Switch Between Multiple Sources?

No. The Smartlinx transmitter accepts one HDMI input and performs no source switching. A wireless HDMI transmitter performs distribution rather than switching. Feeding several sources to the same displays requires an external HDMI switch placed between the sources and the transmitter, which selects the active source before transmission.

Attribute	Value
HDMI inputs on the transmitter	1
Source switching	Not supported
Remote control	Not supplied
Input selection	Performed at the source, or by an external HDMI switch

How Is the Smartlinx Wireless HDMI System Connected?

Installation takes 7 steps and requires no pairing procedure, because all 5 units ship factory paired. The source device output resolution requires setting to 1080p 60Hz or 4K 30Hz before connection.

1. Connect the transmitter HDMI plug to the source device HDMI output. Use the supplied Mini HDMI or Micro HDMI adapter, where the source carries that connector.
2. Connect a supplied USB-C cable from the transmitter to a 5V/1A power source.
3. Extend the transmitter antennas and orient them vertically.
4. Connect each receiver HDMI plug to an HDMI input on its display.
5. Connect a supplied USB-C cable from each receiver to a 5V/1A power source.
6. Select the corresponding HDMI input on each display.
7. Confirm the LED indicates a link on the transmitter and on every receiver, then confirm video and audio at each display.

How Are the Transmitter and Receivers Paired?

The transmitter and all 4 receivers arrive factory-paired, and first use requires no pairing procedure. Re-pairing uses the push button on the transmitter and on the affected receiver. Re-pairing becomes necessary in 2 situations: after a factory reset, and where one receiver stops linking while the others continue to display correctly. The supplied user manual documents the pairing sequence.

What Is Included in the Box?

The box contains 12 items across 5 categories: 1 transmitter, 4 receivers, 5 USB-C power cables, 1 Mini HDMI adapter and 1 Micro HDMI adapter.

Quantity	Item
1	Wireless HDMI transmitter
4	Wireless HDMI receivers
5	USB-C power cables
1	Mini HDMI adapter
1	Micro HDMI adapter

Three items are not included. USB power adapters are excluded and each of the 5 units requires its own 5V/1A power source. HDMI cables are unnecessary, because both units connect as HDMI plugs directly to the source and the display. A USB-C to HDMI adapter is purchased separately, and is required for USB-C source devices.

How Is the Smartlinx Wireless HDMI System Powered?

Each transmitter and receiver requires 5V at 1A through USB-C, with a maximum consumption of 2.61W per unit. Five USB-C cables are included, but power adapters are not. A complete five-unit deployment therefore needs five suitable 5V/1A power sources and draws approximately 13W in total.

Unit	Input	Connector	Maximum draw
Transmitter	5V DC, 1A	USB-C	2.61W
Each receiver	5V DC, 1A	USB-C	2.61W

Television USB ports. A TV USB port rated at 500mA is below the stated 1A requirement and may cause unstable operation. Use a suitable 5V/1A power source when necessary.

Power banks. A USB power bank supplying 5V at 1A can power a transmitter or receiver for temporary or mobile installations.

Can a PC Connect to a TV Wirelessly?

Yes. A PC with a compatible HDMI output connects to the transmitter and a receiver connects to the TV’s HDMI input. Windows and macOS treat the transmitter as a connected display.The supported source modes are up to 1080p60 or 4K30, and the receiver output remains 1080p60.

Can a Laptop Connect to a TV Wirelessly?

Yes. A laptop with HDMI output connects directly to the transmitter. A USB-C-only laptop requires DisplayPort Alt Mode and a separate USB-C-to-HDMI adapter. The Smartlinx USB-C port is a power input, not a USB-C video input.

Can a Camera Connect to Multiple Displays?

Yes. A camera with HDMI, Mini HDMI or Micro HDMI output can connect to the transmitter and up to four receivers . It can send the same camera feed to separate HDMI displays. The included Mini HDMI and Micro HDMI adapters support compatible compact camera connectors.

Is It Suitable for Gaming?

Smartlinx supports compatible HDMI gaming sources. But its specified latency is approximately 100ms. This is less suitable for competitive gaming than a wired HDMI connection or a purpose built ultra-low-latency system. The system fits general gaming and video applications where approximately 100ms latency is acceptable.

Does It Work With Fire TV Stick and Streaming Devices?

Protected content compatibility depends on HDCP support across the source, wireless system and display. A specific HDCP version is not published in the supplied Smartlinx specification. Fire TV Stick, Netflix, Disney+, cable boxes, set-top boxes and Blu-ray players, confirm protected content compatibility before relying on the wireless link for playback.

Wireless HDMI Cable: What Does the Term Mean?

Wireless HDMI cable is a search phrase for wireless HDMI transmission hardware. Smartlinx is not a physical cable. It is a transmitter and receiver system with separate USB-C power connections.

Wireless Monitor Adapter: What Is the Difference?

A wireless monitor adapter commonly uses a casting or wireless display protocol. Smartlinx accepts HDMI at the transmitter and distributes the HDMI source through dedicated receiver hardware without requiring an existing Wi-Fi network.

HDMI Radio Transmitter: What Does It Mean?

HDMI radio transmitter is a broad technical description for hardware that carries HDMI video over radio-frequency wireless transmission. Wireless HDMI transmitter and receiver is the clearer product category for Smartlinx.

Can It Be Used for Live Streaming?

Smartlinx can transmit a compatible HDMI camera or video source to local displays. But it is not an internet streaming encoder. It does not publish video directly to a streaming platform.The product fits local wireless monitoring and multi display distribution rather than internet delivery.

Troubleshooting Why Is There No Picture?

1. Confirm transmitter power.
2. Confirm receiver power.
3. Select the correct HDMI input.
4. Set the source to 1080p60 or 4K30.
5. Check HDMI connections.
6. Check status LEDs.
7. Move the receiver closer to the transmitter.
8. Reduce walls and large obstacles.
9. Re-pair the affected receiver when required.

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