StarTech.com · AV Extender

StarTech.com 4K HDMI Extender with Compact Transmitter - HDBaseT - UHD 4K - TAA price in United Kingdom

Model ST121HDBTDKMPN ST121HDBTDKEAN 065030864916EAN 5057103149384

ConnectivityWired
TypeAV transmitter & receiver
Weight252 g
ColourBlack

Lowest price incl. delivery

£252.22

at PCHUB.UKFree deliveryIn stock

2 stores
Range £252.22 – £307.99
Save up to £55.77 vs. the dearest store
2 in stock
2 with free delivery
Checked 5 Oct 2026, 18:25 UTC

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Full specifications and side-by-side comparison

Prices in United Kingdom

2 stores · prices in GBP · updated 5 Oct 2026, 18:25 UTC

Lowest price£252.22at PCHUB.UK · free shippingGo to PCHUB.UK

Price range across 2 offers

Save up to £55.77 (18%) by choosing the cheapest store

2 of 2 stores in stock
2 with free shipping
Checked 5 Oct 2026, 18:25 UTC

PCHUB.UKLowest priceStarTech.com 4K HDMI Extender with Compact Transmitter - HDBaseT - UHD In stockFree shipping
£252.22incl. free shipping
Go to store : PCHUB.UK (opens in a new tab)
Back to the OfficeStarTech.com 4K HDMI Extender with Compact Transmitter - HDBaseT - UHD 4K - TAA In stockFree shipping
£307.99incl. free shipping+£55.77 (22%) vs lowest
Go to store : Back to the Office (opens in a new tab)

Ad: we may earn a commission when you buy through these links; it never changes the order, which is by total price only. Prices and stock are shown as each store states them, as of 5 Oct 2026, 18:25 UTC, and can change at any time. Taxes are included only where the store includes them.

Price history in United Kingdom

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Product details

Identification

Brand: StarTech.com
Product: 4K HDMI Extender with Compact Transmitter - HDBaseT - UHD 4K - TAA
Full name: StarTech.com 4K HDMI Extender with Compact Transmitter - HDBaseT - UHD 4K - TAA
Manufacturer part number: ST121HDBTDK
EAN / UPC: 065030864916, 5057103149384
Category: AV Extender

47 specifications from the manufacturer's data sheet

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
Cable length	0.1 m
Daisy chain	No
LED indicators	Status
Plug and Play	Yes
Rack mounting	Yes
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