Some cookies are essential to ensure our website works for you. You may block or delete all cookies from this site but parts of the site may not work. To find out more about how we use cookies, see our privacy statement.



Are you in the United States?

Visit our U.S.A. & International site for relevant pricing, distribution and product availability information.

Go to

Browse Products...

HDMI Wireless Video Extender Kit w/ Portable Transmitter for Ultrabooks and Laptops – 50ft

Product ID: ST121WHDST

Wirelessly extend an HDMI signal up to 50ft, with a compact transmitter ideal for laptops/ultrabooks

  • Portable Transmitter with small key-style design and USB power

  • 50ft (15m) Wireless video extension

  • Transmitter and receiver included

More Features . . .
  • No software or drivers required

  • Supports Video Resolution up to 1080p

Prices may be lower from Resellers:



Available in
$465.99 CDN


May be in stock with Resellers/Distributors

Reseller Pricing: Create an Account

Volume Order? Request a quote

The ST121WHDST HDMI Wireless extender kit lets you extend an HDMI audio/video signal wirelessly up to 50ft (15m) using WHDI technology -- a complete end-to-end solution that  includes both the HDMI wireless transmitter and receiver.

With support for digital audio and video resolutions up to 1080p, the HDMI extender allows for wireless video extension with no loss in HDMI quality.

Featuring a small key-style transmitter with USB power, the wireless extender offers maximum portability and can easily be switched from one Ultrabook™ or laptop to another,  allowing the source to be moved while in operation. 

The ST121WHDST is backed by a 2-year warranty and free lifetime technical support

The Advantage
  • Maximum portability, with small USB powered key style Transmitter, that travels with your Ultrabook or Laptop
  • Hassle-free setup with no software or drivers required
  • Saves installation cost, with no cabling infrastructure required
Common Customer Questions

View FAQs...

  • Connect a laptop directly to a boardroom display or projector without installing video cables, and easily switch from one laptop video source to another
  • Extend your display safely across industrial environments without cables
  • Optimize placement of your demo stations at tradeshows and in auditoriums
Product Numbers
Warranty Information
Warranty 2 Years
Audio Yes
Cabling Wireless Ethernet
Daisy-Chain No
Ports 1
Frequency 5.1-5.9GHz
Max Distance 15 m / 50 ft
Maximum Digital Resolutions 1920x1080
Supported Resolutions Widescreen: 1080p, 1080i, 720p, 480p

Standard: VGA(640X480), SVGA(800X600), XGA(1024X768), SXGA(1280X1024)
Local Unit Connectors 1 - HDMI (19 pin)
1 - USB Mini-B (5 pin) Female
Remote Unit Connectors 1 - HDMI (19 pin)
Special Notes / Requirements
Note The maximum distance between the transmitter and the receiver is 15 meters. If the wireless signal is obstructed by walls, or other interference the signal quality and maximum distance will likely be reduced.
The Micro USB port on the transmitter unit provides power
The USB port on the receiver unit is for firmware updates only
LED Indicators 1 - Wireless Network Status Indicator
2 - Video Status Indicator
Center Tip Polarity Positive
Input Current 0.3 A
Input Voltage 115 ~ 230
Output Current 1A
Output Voltage 5 DC
Plug Type M
Power Consumption (In Watts) 5
Power Source AC Adapter Included
Humidity 0% ~ 80% RH
Operating Temperature 0°C to 50°C (32°F to 122°F)
Storage Temperature 0°C to 50°C (32°F to 122°F)
Physical Characteristics
Color Black
Enclosure Type Plastic
Product Height 0.7 in [18 mm]
Product Length 5.8 in [148 mm]
Product Weight 15.5 oz [440 g]
Product Width 3.8 in [97 mm]
Packaging Information
Shipping (Package) Weight 1.5 lb [0.7 kg]
What's in the Box
Included in Package 1 - wireless HDMI transmitter
1 - wireless HDMI receiver
1 - remote control
1 - USB cable (transmitter power)
1 - universal power adapter (NA / EU / UK / AU)
1 - stand (for receiver)
1 - right angle HDMI adapter (for transmitter)
1 - instruction manual
HDMI over Cat5 Video Extender Kit with Audio - RS232 and IR Control

HDMI over Cat5 Video Extender Kit with Audio - RS232 and IR Control

Extend an HDMI® signal with accompanying audio over standard UTP/STP cabling - Includes RS232 and IR interfaces


In stock:   Canada: 23  |  USA: 0
2 Port HDMI Video Splitter with Audio - USB Powered

2 Port HDMI Video Splitter with Audio - USB Powered

Split an HDMI® source with accompanying audio to 2 displays


In stock:   Canada: 9  |  USA: 100

We will transfer stock to fulfill your order at no extra cost. If the quantity shown for our Canadian warehouse isn’t enough to fulfill your order, we will transfer the required stock from our US warehouse.

Share your opinions about this product

Thanks for sharing your opinions about the ST121WHDST. When writing your review, please focus on the performance and quality of this product. Your comments will help guide others. If possible, include examples of how you use the product, things you like or things you wish were different about it.

We're here to help

If you need support or you want to comment on parts of your purchase experience aside from the quality or performance of the product such as shipping or any technical/customer support issue, etc., we’d be happy to help you through Live Chat, our support form or by phone.


Rating Snapshot

★   1
★   1
★   0
★   0
★   0

Average Customer Ratings

1-2 of 2 Reviews
Rating: 4 /5

Works good, though the transmitter gets hot!

Works good, though the transmitter gets hot after an hour of use. Would be nice if you could just power off the HDMI vs using the USB cable as well (two more inches would be nice)

Quality of Product (4/5)
Helpful? Yes · 0 No · 0 - Report Comment
Rating: 5 /5

Works Perfectly

I just received mine and I'm watching a sports event with it. It works perfectly and it is so simple! You just plug it in and it works. No software and no batteries. Video and sound both work perfectly.

Quality of Product (5/5)
Helpful? Yes · 0 No · 0 - Report Comment

* Product appearance and specifications are subject to change without notice.

x - HDMI Wireless Video Extender Kit w/ Portable Transmitter for Ultrabooks and Laptops – 50ft

My Review

Overall Rating*
Click to rate
It was easy to find this product
My rating for the quality of this product
Click to rate

You may receive emails regarding this submission. Any emails will include the ability to opt-out of future communications.

* denotes a required field