HDMI Wireless Transmitter and Receiver Kit - 656 ft. - 1080p

HDMI® over Wireless Extender | 2-Channel Audio Support | Low Latency

Product ID: ST121WHDLR

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  • Achieve long-range wireless HDMI extension, at distances up to 656 ft. (200 m)
  • Eliminate cable clutter and installation costs without sacrificing picture quality
  • Convenient all-in-one solution with both wireless transmitter and receiver included
Your price
£499.99 GBP excl. VAT
£599.99 GBP incl. VAT

In stock: 29

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This long-range Wireless HDMI Transmitter and Receiver Kit lets you transmit the audio/video signal from an HDMI source to a remote display up to 656 ft. (200 m) away.

Cut the Cord and Installation Costs

This HDMI over wireless extender offers a practical and convenient alternative to traditional video cabling, which eliminates the cost of installing an expensive wiring infrastructure. This bundled kit includes both the transmitter and receiver, helping you avoid the expense of buying multiple devices to accomplish one task.

Ultimate Convenience

This wireless extender kit uses Wi-Fi to transmit a high-definition 1080p HDMI signal, as well as an IR signal for controlling your source device remotely.

With this wireless video extender, you can extend or mirror your device to share documents or multimedia content from anywhere in the room, making it the perfect solution for sharing ideas with your colleagues. It’s also great for digital signage applications because it enables you to install your display wherever you’d like, unlike wired solutions that force you to compromise on location.

Hassle-Free Installation

The HDMI video transmitter and receiver are very easy to install and use. With simple plug-and-play installation, setup is easy and hassle-free. The extender is a pure hardware solution that doesn’t require any software or drivers, so you can avoid complicated software installation and configuration.

ST121WHDLR is backed by a 2-year StarTech.com warranty and free lifetime technical support


  • Transmit HDMI wirelessly to your HDTV
  • Extend video over Wi-Fi to avoid drilling through walls
  • Optimize placement of your demo stations at tradeshows
  • Wirelessly project high-definition digital signage

Partner Numbers

  • Exertis 0010277460
  • Ingram Micro UK V934509
  • CMS Distribution V243970
  • UPC 065030872355


  • OS Independent logo


Warranty Information Warranty 2 Years
Connector(s) 1 - Local Unit Connectors HDMI (19 pin)
IrDA (Infrared, SIR/FIR)
1 - Remote Unit Connectors HDMI (19 pin)
IrDA (Infrared, SIR/FIR)
Environmental Operating Temperature 0°C to 40°C (32°F to 104°F)
Storage Temperature -20°C to 80°C (-4°F to 176°F)
Humidity 25%-60%
Hardware Ports 1
Cabling Wireless Ethernet
Audio Yes
Rack-Mountable Yes
Daisy-Chain No
Indicators 2 - LED Indicators Video Link
Network Link
Packaging Information Shipping (Package) Weight 1.1 kg [2.4 lb]
Package Length 26.0 cm [10.2 in]
Package Width 20.0 cm [7.9 in]
Package Height 90.0 mm [3.5 in]
Performance Max Distance 200 m / 660 ft
Maximum Digital Resolutions 1920 x 1080 @ 60Hz (1080p)
Supported Resolutions Widescreen: 1080p, 1080i, 720p, 480p

Standard: VGA (640X480), SVGA (800X600), XGA (1024X768), SXGA (1280X1024)
Frequency 5GHz
Physical Characteristics Color Black
Material Plastic
Product Length 11.0 cm [4.3 in]
Product Width 64.0 mm [2.5 in]
Product Height 2.5 cm [1.0 in]
Weight of Product 236.0 g [8.3 oz]
Power Power Source AC Adapter Included
Output Voltage 5 DC
Output Current 2A
What's in the Box 1 - Included in Package HDMI over Wireless Transmitter
HDMI over Wireless Receiver
3 ft [1 m] IR Blaster
3 ft [1 m] IR Receiver
5 ft [1.5 m] HDMI Cable
Quick-Start Guide
2 - Included in Package Universal Power Adapters (NA, EU, UK)
Mounting Hardware



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Talk to an Advisor

We are always ready to assist you with any questions you may have.

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Product Support

Talk to an Advisor

We are always ready to assist you with any questions you may have.

Live Chat (opens in new window)

Frequently Asked Questions


1. Fold in the North American power plug.
2. Slide the Universal Power Adapter over the North American power plug until you hear an audible click.

Note: The North American power plug does not have to be removed from this product to use the Universal Power Adapter. 


  1. The power adapter may not be connected at the correct unit or may not be connected at all.  Please check your product manual to see where your power adapter has to be positioned.
  2. An adapter to another video signal may be connected to the Transmitter or Receiver unit.  Please avoid any converters for the initial setup.
  3. The Cat 5 or 6 cable coming from the transmitter or receiver unit may be connected to a network switch.  Some of our video extenders will work in this configuration, but others will not. Please check your product manual to see if your model can be used connected to an IP network. For the initial setup, avoid connecting the Cat 5 or 6 cables to any network switch, hub, or router.
  4. The category of Unshielded Twisted Pair (UTP) cables may not meet StarTech.com’s requirements. Ensure at least Cat 5, 5e, or six cables are used, and they have eight wires. Some Cat 5 cables only have four wires. If using Cat 6 cables, be aware they have more twists per foot, so you may have to use shorter cable lengths if using Cat 6 cabling between your video extenders.
  5. Bundling up the UTP cabling connected to the extenders can cause crosstalk, which will prevent the video signal from showing on the display.  Unwrapping the cable should resolve this issue.
  1. Please check to see if your model has an adjustable Gain dial on the remote unit.
  2. If it does, use it to adjust the color until it is acceptable.
  3. Replace the VGA cable with a higher quality cable like StarTech.com’s MXT101MMHQ.

Compliance and safety

Compliance letters

Safety Measures

  • If product has an exposed circuit board, do not touch the product under power.
  • If Class 1 Laser Product. Laser radiation is present when the system is open.
  • Wiring terminations should not be made with the product and/or electric lines under power.
  • Product installation and/or mounting should be completed by a certified professional as per the local safety and building code guidelines.
  • Cables (including power and charging cables) should be placed and routed to avoid creating electric, tripping or safety hazards.
*Product appearance and specifications are subject to change without notice.

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