StarTech.com HDMI Over CAT6 Extender - Power Over Cable - Up to 100 m (328 ft.)

Manufacturer: Startech | Model: ST121HDBT20L | Product ID: 5858 | Warranty: 2 Years
£404.96 (inc. VAT)
7 in stock
100% Money Back Guarantee - Risk Free

Product Technical Specification

Features
TypeAV transmitter & receiver
Maximum resolution4096 x 2160
Cable types supportedCat5e,Cat6
Maximum transfer distance100
Audio output channels7.1
LED indicatorsStatus
Supported video modes720p,1080p
Supported graphics resolutions1280 x 720 (HD 720),1920 x 1080 (HD 1080),1920 x 1200 (WUXGA),2560 x 1600 (WQXGA),3840 x 2160
MaterialAluminium
Daisy chainNo
Rubber feetYes
Product colourBlack
Ports & interfaces
Connectivity technologyWired
RJ-45 input ports1
RJ-45 output ports1
HDMI in1
Number of HDMI outputs1
Remote (IR) input2
Remote (IR) output2
Power
AC input voltage100 - 240
Operating voltage18
Input current0.6
Output current1
External power adapterYes
Power plug typeType M
Operational conditions
Operating temperature (T-T)0 - 40
Storage temperature (T-T)-10 - 60
Operating relative humidity (H-H)0 - 80
Packaging data
Package width206
Package depth280
Package height62
Package weight230
Packaging content
AC adapter includedYes
Included power plug typesANZ,EU,JP,NA,UK
Quick start guideYes
IR blaster includedYes
IR receiver includedYes
Mounting brackets includedYes
Technical details
Sustainability certificatesCE,RoHS
Logistics data
Master (outer) case width323
Master (outer) case length410
Master (outer) case height275
Products per master (outer) case6

Delivery Options

Economy Delivery
FREE
Economy Delivery

Economy Delivery (UK)

Estimated delivery date: Sun 07th Dec 2025 to Wed 10th Dec 2025
Business Express
£6.95
Business Express

Business Express

Estimated delivery date: Sat 06th Dec 2025 to Mon 08th Dec 2025
View all Delivery Options & International Rates
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.) awayThis 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 setupThe 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
Features
TypeAV transmitter & receiver
Maximum resolution4096 x 2160
Cable types supportedCat5e,Cat6
Maximum transfer distance100
Audio output channels7.1
LED indicatorsStatus
Supported video modes720p,1080p
Supported graphics resolutions1280 x 720 (HD 720),1920 x 1080 (HD 1080),1920 x 1200 (WUXGA),2560 x 1600 (WQXGA),3840 x 2160
MaterialAluminium
Daisy chainNo
Rubber feetYes
Product colourBlack
Ports & interfaces
Connectivity technologyWired
RJ-45 input ports1
RJ-45 output ports1
HDMI in1
Number of HDMI outputs1
Remote (IR) input2
Remote (IR) output2
Power
AC input voltage100 - 240
Operating voltage18
Input current0.6
Output current1
External power adapterYes
Power plug typeType M
Operational conditions
Operating temperature (T-T)0 - 40
Storage temperature (T-T)-10 - 60
Operating relative humidity (H-H)0 - 80
Packaging data
Package width206
Package depth280
Package height62
Package weight230
Packaging content
AC adapter includedYes
Included power plug typesANZ,EU,JP,NA,UK
Quick start guideYes
IR blaster includedYes
IR receiver includedYes
Mounting brackets includedYes
Technical details
Sustainability certificatesCE,RoHS
Logistics data
Master (outer) case width323
Master (outer) case length410
Master (outer) case height275
Products per master (outer) case6

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Buykingston order despatch times:

We will despatch your order the very same day if we receive cleared payment by 12:00 pm Mon-Fri.

These delivery estimates apply when you order up to 12:00 pm Mon-Fri (excluding public holidays).

We charge a one off delivery cost as outlined below regardless of how many items you order or the weight of your order.

Estimated delivery times are provided to us by the respective delivery companies. We pass this information onto you, the customer.

Despatch times do not apply to UK public holidays.

Estimated delivery times are taken from the next available working day available for delivery. For example if an order was despatched on a working Wednesday by 3pm, the first available working day for delivery would be Thursday provided you placed your order by 3pm on the Wednesday. If the next available weekday is a UK bank holiday/public holiday then your order will be despatched on the next available working day.

Our warehouse reserves the right to upgrade the delivery method you select on your order.

Our available delivery options*

Contact us for a shipping quote.

*All delivery times are estimated unless stated.

Product Returns Note

Buykingston offers a very flexible and hassle free returns policy. If for whatever reason you are not happy with the item purchased you can return it to us within 12months for a refund (for unused and unopened items) or within 30 days on opened and used items for a refund. This applies to items purchased direct through Buykingston  only.

Our 30 Day Returns Money Back Guarantee Satisfaction Guarantee:
For items opened and used and that are returned in a resellable condition.

Our 365 Day Returns Money Back Guarantee Satisfaction Guarantee:
For items that remain sealed and unused.

Some items are excluded from our moneyback guarantee unless they have developed a fault. These include;

- Headphones
- Earphones
- Custom made and designed products such as flash memory products with custom logo’s on them. E,g USB flash drives and memory cards with your own logo

Returns FAQs

What is your returns criteria?
On opened items 30 days from date of receipt or expected date of receipt on non tracked items.
On unopened items 365 days.

How do i go about returning my order?
Please contact us via our contact page with your order number where we will present you with an RMA number and returns label.

Do i need to contact you before returning my order?
Yes, to obtain an RMA number.

Does my item have to include its original packaging?
Yes for items that fall within our 30 day money back guarantee and our 365 day returns. Of course for faulty items we realise you may no longer have the packaging.

Who deals with the warranty on a faulty item?
We will. In some circumstances we may ask you to contact the manufacturer direct for assistance.

Please ensure you have read and comply in full with Section 11 & 13 of our terms and conditions which you can read here in full.