Wireless HD Extender WHDI - 1080p Wireless High Definition 100 ft / 30m

Product ID: ST121WHD

Wirelessly extend a single HD audio/video signal up to 30m (100ft)

  • Extend HD video up to 100ft (30m)

  • Includes WHDI transmitter (local) and WHDI receiver (remote) units

  • Supports resolutions up to 1080p (1920x1080)

More Features . . .
  • Pure hardware design - no software or drivers required

  • IR remote control enables you to control your source device remotely through the wireless connection back to the transmitter

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$399.99 USD


May be in stock with Resellers/Distributors

This product has been replaced with:
HDMI over Wireless Extender - 1080p (ST121WHD2)

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The ST121WHD Wireless HD Video Extender Kit includes both a WHDI transmitter and WHDI receiver, enabling you to wirelessly send a full HD (1080p) video signal, as well as audio and IR, from a high-definition signal source to a remote HD display or projector located up to 30m (100ft) away.

The ST121WHD is a bundled kit, which provides both local and remote units, and an IR remote control, delivering a complete, end-to-end alternative for a single source-to-display digital signage connection.

A cost-effective solution, the wireless HD extender delivers full High-Definition video, as well as audio and Infrared (IR), eliminating the need for an expensive cable infrastructure to provide a wireless solution for settings where cabling may be undesirable, (e.g. in the middle of a room, boardroom, etc.) or difficult to install.

Compliant with both HDCP, and WHDI standards, this versatile WHDI transmitter/receiver kit ensures that even the latest devices will be able to pass a signal, with support for full 1080p resolutions and the accompanying digital audio. Plus, the kit enables you to control your source device remotely, using the IR extender for a complete HD extension solution.

Backed by a StarTech.com 2-year warranty and free lifetime technical support.

ST121WHD Operation Diagram

The StarTech.com Advantage
  • Full HD (1080p) resolution at the maximum distance ensures your content is displayed the way it was meant to be seen utilizing WHDI technology
  • Pure hardware design simplifies installation and set up, with no software or drivers required
  • Wireless communication between local and remote receivers eliminates the need for expensive cable infrastructure
Common Customer Questions

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  • Place the display in a convenient viewing area, while the system equipment is placed elsewhere in a clean and secure environment
  • Ideal for digital signage applications in financial, educational, and business sectors
  • Extend your display across harsh environments (e.g. industrial sites)
  • Perfect for video conferencing solutions in boardrooms and office settings
  • Optimize placement of your demo stations at tradeshows and in auditoriums
Product Numbers
Dell Harmony A6914317
TechData Dis 11030194
ASI Distribution USA 132971
D and H ST121WHD
Ingram Micro USA PX1144
Synnex US STA-ST121WHD
UPC Code 065030847506
Warranty Information
Warranty 2 Years
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]
Audio Yes
Cabling Wireless Ethernet
Daisy-Chain No
Ports 1
Frequency 5.1-5.9GHz
Max Distance 30 m / 100 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) Female
Remote Unit Connectors 1 - HDMI (19 pin) Female
Special Notes / Requirements
Note The maximum distance between the transmitter and the receiver is 30 meters. If the wireless signal is obstructed by walls, or other interference the signal quality and maximum distance will likely be reduced. The working Frequency band may vary with the relevant laws in different regions.
LED Indicators 1 - Wireless Network Status Indicator
2 - Video Status Indicator
Center Tip Polarity Positive
Input Current 0.4A
Input Voltage 100 ~ 240 AC
Output Current 2A
Output Voltage 5 DC
Plug Type M
Power Source AC Adapter Included
Humidity 5% ~ 90% RH
Operating Temperature 0~40°C
Storage Temperature -20~60°C
Packaging Information
Shipping (Package) Weight 51.2 oz [1450 g]
What's in the Box
Included in Package 1 - Wireless HD Transmitter
1 - Wireless HD Receiver
1 - IR Remote Control
2 - Positioning Stand
1 - HD Cable
1 - IR Remote Extension Connector
2 - Universal Power Adapter (NA/UK/EU/AUS)
1 - Instruction Manual
HDMI® over Cat5 Video Extender Kit with Audio - RS232 and IR Control

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


In stock:   USA: 14  |  Canada: 28

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

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:   USA: 905  |  Canada: 87

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

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Rating Snapshot

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Average Customer Ratings

Overall 4
Quality of Product
1-1 of 1 Reviews
Rating: 4 /5

It does what it is supposed to do

I get a TV connected 24/7. It does disconnect but quite rarely. The image is real HD and pretty stable. I share TV and Internet with a neighbour on the same floor 3 doors away and it goes through many walls before reaching my receiver. I have had some good fights with the IR, that happens more than rarely. Overall, I save 50 $ per month on TV bill so it's paid for within 6 to 7 months.

Quality of Product (4/5)
Helpful? Yes · 1 No · 0 - Report Comment

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

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Startech.com - Wireless HD Extender WHDI - 1080p Wireless High Definition 100 ft / 30m

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