Extend HDMI over CAT5e/CAT6 cabling to a remote location, with support for 4K 60Hz at 70 m (230 ft.) and 1080p 60Hz at 100 m (328 ft.)

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 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, 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 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.

The StarTech.com Advantage


StarTech.com ST121HDBT20L. Type: AV transmitter & receiver, Maximum resolution: 4096 x 2160 pixels, Cable types supported: Cat5e, Cat6. Connectivity technology: Wired. AC input voltage: 100 - 240 V, Operating voltage: 18 V, Input current: 0.6 A. Package width: 8.11" (206 mm), Package depth: 11" (280 mm), Package height: 2.44" (62 mm). Included power plug types: ANZ, EU, JP, NA, UK

Type	AV transmitter & receiver
Maximum resolution	4096 x 2160 pixels
Cable types supported	Cat5e, Cat6
Maximum transfer distance	3937" (100 m)
Audio output channels	7.1 channels
LED indicators	Status
Supported video modes	720p, 1080p
Supported graphics resolutions	1280 x 720 (HD 720), 1920 x 1080 (HD 1080), 1920 x 1200 (WUXGA), 2560 x 1600 (WQXGA), 3840 x 2160
Material	Aluminum
Daisy chain	No
Rubber feet	Yes
Product color	Black
Connectivity technology	Wired
RJ-45 input ports	1
RJ-45 output ports	1
HDMI in	1
Number of HDMI outputs	1
Remote (IR) input	2
Remote (IR) output	2
AC input voltage	100 - 240 V
Operating voltage	18 V
Input current	0.6 A
Output current	1 A
External power adapter	Yes
Power plug type	Type M
Operating temperature (T-T)	0 - 40 °C
Storage temperature (T-T)	-10 - 60 °C
Operating relative humidity (H-H)	0 - 80%
Package width	8.11" (206 mm)
Package depth	11" (280 mm)
Package height	2.44" (62 mm)
Package weight	8.11 oz (230 g)
AC adapter included	Yes
Included power plug types	ANZ, EU, JP, NA, UK
Quick start guide	Yes
IR blaster included	Yes
IR receiver included	Yes
Mounting brackets included	Yes
Compliance certificates	CE, RoHS
Master (outer) case width	12.7" (323 mm)
Master (outer) case length	16.1" (410 mm)
Master (outer) case height	10.8" (275 mm)
Quantity per master (outer) case	6 pc(s)