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Product specifications

StarTech.com 4K HDMI Extender with Compact Transmitter - HDBaseT - UHD 4K - TAA

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StarTech HDBaseT Extender Kit with Compact Transmitter - HDMI over CAT5 - HDMI over HDBaseT - Up to 4K , TAA (ST121HDBTDK)

Part ST121HDBTDK · UPC 065030864916

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  • Simple and versatile installation with a compact, USB-powered transmitter that features a built-in HDMI cable
  • Astonishing picture quality with support for UHD resolutions up to 4K
  • Easy integration with existing CAT5/CAT6/CAT7 infrastructure
  • Mounting hardware included
  • 7.1 audio support

About this product

HDBaseT Extender Kit | 7.1 Audio | Mounting Hardware Included | Up to 70 m (230 ft.)

This 4K HDMI extender uses HDBaseT to transmit your HDMI A/V signal to a remote location up to 70 m (230 ft.) away.

Easy and Discreet Installation

The transmitter in this HDMI HDBaseT extender kit features a small footprint and built-in HDMI cable that connects directly to your source for reduced clutter. It’s powered from a USB port on your source device, which makes it easier to install in areas where power outlets may be limited. Mounting hardware is included for the receiver for a discreet, professional installation.

Get 4K Video at 130 ft. (40 m)

This HDMI over CAT6 extender maintains your UHD 4K picture quality, even at 130 feet away from your video source. Because the extender is backward compatible with 1080p and lower resolutions at 230 feet away, you can comfortably use this extender to make any video source look great. The extender also supports 7.1 audio to ensure all audio channels are captured.

Seamless Integration with Your Existing Infrastructure

The kit extends HDMI over a single cable, unlike some HDMI extenders that require two cables, reducing potential failure points and lowering your cabling costs. Ideal for digital signage, the HDMI over CAT6 extender uses standard CAT5e, CAT6 or CAT7 cables to extend HDMI video over the Ethernet infrastructure that's already in your building.

The ST121HDBTDK is backed by a StarTech.com 2-year warranty and free lifetime technical support.

Manufacturer warranty information

2 Years

Features

Type
AV transmitter & receiver
Maximum resolution
4096 x 2160 pixels
Cable types supported
Cat5e, Cat6
Maximum transfer distance
70 m
Audio system
Multichannel
Audio output channels
7.1 channels
LED indicators
Status
Cable length
0.1 m
Rack mounting
Yes
Plug and Play
Yes
Daisy chain
No
Product colour
Black
HDBaseT certified
Yes
Certification
CE, FCC, TAA, REACH

Ports & interfaces

Connectivity technology
Wired
RJ-45 input ports
1
RJ-45 output ports
1
HDMI in
1
Number of HDMI outputs
1

Power

AC input voltage
100-240 V
Operating voltage
12 V
Input current
0.6 A
Output current
1.5 A
Power consumption (typical)
18 W
External power adapter
Yes
Power plug type
Type M

Operational conditions

Operating temperature (T-T)
0 - 40 °C
Storage temperature (T-T)
-10 - 60 °C
Operating relative humidity (H-H)
0 - 80%

Weight & dimensions

Width
68 mm
Depth
80 mm
Height
25 mm
Weight
252 g

Packaging data

Package width
197 mm
Package depth
294 mm
Package height
74 mm
Package weight
1.6 kg

Packaging content

AC adapter included
Yes
Cables included
USB
Included power plug types
ANZ, EU, NA, UK
Quick start guide
Yes
Mounting kit
Yes

Technical details

Compliance certificates
RoHS

Logistics data

Master (outer) case width
410 mm
Master (outer) case length
455 mm
Master (outer) case height
328 mm
Products per master (outer) case
10 pc(s)

Specifications and images: Database Right data-sheet 2026 Icecat. All rights reserved. Supplied as is, without warranty. Specs Icecat · Open Content License

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