Startech

StarTech HDMI Over CAT6 Extender - Power Over Cable - 4K 60Hz Up to 70m / 230 ft - 1080p 60Hz up to 100m / 328 ft (221644)

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SKU:
18165196
MPN:
221644
Availability:
Usually ships the same or next business day. In stock at our CA, IL, PA warehouses.
Shipping:
Calculated at Checkout
Stock Update:
02/11/2026 03:23:41 AM PST
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$472.63
Stock Update:
02/11/2026 03:23:41 AM PST

Description



This item is brand-new, factory sealed.

This HDMI Over CAT6 extender transmits your HDMI audio/video signal to a remote location up to 100 m (328 ft.) away.

Get 4K at 60Hz from 70 m (230 ft.) away
This HDMI over CAT6 extender maintains your Ultra HD 4K picture quality, even at 70 m (230 ft.) away from your video source. If youre not running 4K video, this extender supports High-Definition 1080p 60Hz and lower resolutions at even greater distances, up to 100 m (328 ft.) from your HDMI source.
With full support for your HDMI 2.0 equipment, including 4K resolution at 60Hz, this extender can transmit at a bandwidth of up to 18Gbps, making it the ideal solution for high-resolution tasks requiring the highest color detail. For smoother video and color transitions, the extender offers 4:4:4 chroma subsampling via visually lossless compression, meaning every pixel gets its own unique color.

Simplify your setup
The HDMI Extender Over CAT6 offers a hassle-free solution for your digital signage project. The extender only requires a single CAT5e or CAT6 cable, so you extend an HDMI signal using existing infrastructure thats already in your building. Plus, this HDMI extender supports Power Over Cable (POC), which means youll only need one power adapter connected to either your transmitter or receiver. Mounting hardware is also included for discreet, professional installation.
The ST121HDBT20L is TAA compliant and backed by a 2-year StarTech.com warranty with free lifetime technical support.
Hardware
Audio: Yes
Cabling: Cat 5e UTP or better
Daisy-Chain: No
Ports: 1Performance
Audio Specifications: 7.1 Surround Sound
Max Distance: 100 m / 330 ft
Maximum Cable Length: 328.4 ft 100.1 m
Maximum Digital Resolutions:
Up to 70 m: 4096 x 2160 (4K) at 60 Hz
Up to 100 m: 1080p at 60Hz
Supported Resolutions:
3840x2160 (4K) at 60 Hz
2560x1600
1920x1200 at 60 Hz
1920x1080 (1080p)
1280x720 (720p)
Wide Screen Supported: YesConnector(s)
Local Unit Connectors:
1 - HDMI (19 pin) Female Input
1 - RJ-45 Female Output
Remote Unit Connectors:
1 - RJ-45 Female Input
1 - HDMI (19 pin) Female OutputIndicators
LED Indicators:
1 - status LED (local)
1 - status LED (remote)Power
Center Tip Polarity: Positive
Input Current: 0.6A
Input Voltage: 100 - 240 AC
Output Current: 1 A
Output Voltage: 18 DC
Plug Type: M
Power Consumption (In Watts): 18
Power Source: AC Adapter IncludedEnvironmental
Humidity: 0% - 80 % RH (non-condensing)
Operating Temperature: 0oC to 40oC (32oF to 104oF)
Storage Temperature: -10oC to 60oC (14oF to 140oF)Physical Characteristics
Color: Black
Enclosure Type: AluminumWhats in the Box
Included in Package:
1 - HDMI over CAT6 transmitter
1 - HDMI over CAT6 receiver
1 - universal power adapter (NA/JP, EU, UK, ANZ)
1 - IR blaster
1 - IR receiver
2 - mounting brackets
8 - rubber feet
1 - quick-start guideItem Dimension (L"xW"xH")
12 x 9 x 3

Weight
3 lbs

Warranty Information
2 Year Warranty

Package Contents:
  • 1 x HDMI Over CAT6 Transmitter
  • 1 x HDMI Over CAT6 Receiver
  • 1 x Universal Power Adapter (NA/JP, EU, UK, ANZ)
  • 1 x IR Blaster
  • 1 x IR Receiver
  • 2 x Mounting Brackets
  • 8 x Rubber Feet
  • 1 x Quick-Start Guide

Features

Package Contents:   
  • 1 x HDMI Over CAT6 Transmitter
  • 1 x HDMI Over CAT6 Receiver
  • 1 x Universal Power Adapter (NA/JP, EU, UK, ANZ)
  • 1 x IR Blaster
  • 1 x IR Receiver
  • 2 x Mounting Brackets
  • 8 x Rubber Feet
  • 1 x Quick-Start Guide

 

TAA Compliant:   
Yes

 

Environmentally Friendly:   
Yes

 

Environmental Compliance:

Restriction of Hazardous Substances (RoHS)
Waste Electrical and Electronic Equipment Directive (WEEE)
Registration, Evaluation, Authorization and Restriction of Chemicals (REACH)

 

Country of Origin:   
Taiwan

 

Specs

Physical Characteristics
Transmitter Weight (Approximate)3.88 oz
Receiver Width3"
Receiver Height1"
Product ColorBlack
Receiver Depth4"
Transmitter Depth4"
Receiver Weight (Approximate)3.88 oz
Color FamilyBlack
Transmitter Height1"
Transmitter Width3"
Warranty
Limited Warranty2 Year
Interfaces/Ports
Network (RJ-45)Yes
HDMI OutYes
Number of HDMI Inputs1
HDMI InYes
Number of HDMI Outputs1
Number of Network (RJ-45) Ports2
Video
Maximum Video Resolution4096 x 2160
Graphics Modes4K
General Information
Brand NameStarTech.com
Manufacturer Website Addresshttp://www.startech.com
Marketing InformationThis HDMI Over CAT6 extendertransmitsyour HDMI audio/video signal to a remote location up to 100 m (328 ft.)away.
Get4K at 60Hz from 70 m (230 ft.)away
This HDMI over CAT6 extender maintains your Ultra HD 4K picture quality, even at 70 m (230 ft.)away from your video source. If you're not running 4K video, this extender supports High-Definition 1080p 60Hz and lower resolutions at even greater distances, up to 100 m (328 ft.)from your HDMI source.
With full support for your HDMI 2.0 equipment, including4K resolution at 60Hz, this extender can transmit at a bandwidth of up to 18Gbps, making it the ideal solution for high-resolution tasks requiring the highest color detail. For smoother video and color transitions, the extender offers 4:4:4 chroma subsampling via visually lossless compression, meaning every pixel gets its own unique color.
Simplify your setup
The HDMI Extender Over CAT6 offers a hassle-free solution for your digital signage project. The extender only requires a single CAT5e or CAT6 cable, so you extend an HDMI signal using existing infrastructure that's already in your building. Plus, this HDMI extender supports Power Over Cable (POC), which means you'll only need one power adapter connected to either your transmitter or receiver. Mounting hardware is also included for discreet, professional installation.
The ST121HDBT20L is TAA compliant and backed by a 2-year StarTech.com warranty with free lifetime technical support.
More from the Manufacturer
More from the Manufacturer
Product TypeVideo Extender Transmitter/Receiver
Product NameHDMI Over CAT6 Extender - Power Over Cable - Up to 100 m (328 ft.)
ManufacturerStarTech.com
Manufacturer Part NumberST121HDBT20L
Packaged Quantity1 Kit
Media & Performance
Twisted Pair Cable StandardCategory 6
Media Type SupportedTwisted Pair
Technical Information
Maximum Operating Distance328.08 ft
Number of Input Devices Supported1
Connectivity TechnologyWired
Number of Output Devices Supported1

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Warranty Information

All Items are Brand New, Factory Sealed and come with a standard warranty. [Read our policies]
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StarTech HDMI Over CAT6 Extender - Power Over Cable - 4K 60Hz Up to 70m / 230 ft - 1080p 60Hz up to 100m / 328 ft (221644)
$472.63