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header-product AV transmitter & receiver StarTech.com ST121HD20V 4K 60Hz HDMI over CAT6
165.49 €

AV transmitter & receiver StarTech.com ST121HD20V 4K 60Hz HDMI over CAT6

AV transmitter & receiver StarTech.com ST121HD20V Photo 1
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AV transmitter & receiver StarTech.com ST121HD20V 4K 60Hz HDMI over CAT6

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AV transmitter & receiver StarTech.com ST121HD20V 4K 60Hz HDMI over CAT6

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Short description

The StarTech.com ST121HD20V HDMI over CAT6 Extender Kit supports 4K resolution at 60Hz. It allows you to extend HDMI signals over Cat6 cables, ensuring high-quality video transmission. The kit includes a transmitter and receiver, operating on a wide input voltage range of 100-240V. Compact design with dimensions of 70mm width, 97mm depth, and 13mm height makes it easy to integrate into various setups.
Available at price 165.49 €: 8 pcs.
Total available for order: 18 pcs.
Warranty: 2 Years
SKU: 10973987
Manufacturer: StarTech
free shipment

Cheapest delivery:

Unisend LV

Pick-up points

Unisend LV

Cost

1.99 €

Deliver

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Customer service center
2b. Kengaraga str., Riga, Latvia, LV-1063
19.10.2026 {{selectedOffer.officeDeliveryString}}
free
Courier Delivery Please note that in case of a large parcel additional delivery costs may apply!
22.10.2026 {{selectedOffer.courierDeliveryString}}
From 4.99 € (Weight: 0.78 kg)
Parcel couriers
Unisend LV / Venipak Pickup LV / Venipak Locker LV / DPD Paku skapis / Omniva LV / Latvijas Pasts pakomāts / Latvijas Pasts nodaļa
22.10.2026 {{selectedOffer.parcelStationDeliveryString}}
From 1.99 €
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Payment Methods:
Bank transfer
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Product information

Description

The StarTech.com ST121HD20V HDMI over CAT6 extender kit transmits 4K 60Hz (3840 x 2160) signals up to 165 ft (50 m) over a single Cat6 cable and includes both a transmitter and receiver with a local HDMI output. It supports HDMI 2.0 features including 4:4:4 chroma subsampling, High Dynamic Range (HDR), and HDCP 2.2 compatibility, and is powered from a wide 100–240V input range. The compact black units are suitable for installations where long-distance HDMI distribution is required.

Advantages

The kit delivers four times the detail of 1080p by supporting 4K at 60Hz and preserves color fidelity with 4:4:4 chroma subsampling. HDR support increases contrast and brightness for more accurate images, while HDCP 2.2 compliance ensures compatibility with protected sources. Using a single Cat6 cable for transmission simplifies installation and reduces infrastructure costs, and the kit includes both transmitter and receiver for a complete solution.

Suitable for

  • Extending HDMI sources such as Blu-ray players or streaming devices to remote displays
  • Digital signage installations in retail, hospitality, or corporate environments
  • Home theatre setups requiring long cable runs through walls or ceilings

Key specifications

  • Model: StarTech.com ST121HD20V
  • Maximum resolution: 3840 x 2160 at 60Hz (4K 60Hz)
  • Chroma subsampling: 4:4:4
  • HDR support: Yes
  • HDCP compliance: HDCP 2.2 (backward compatible)
  • Maximum transfer distance: 50 m (165 ft) over Cat6
  • Cable types supported: Cat6
  • HDMI inputs/outputs: 1 HDMI in, 2 HDMI outputs (including local HDMI output)
  • RJ‑45 ports: 1 input, 1 output
  • Power input: 100–240V
  • Colour: Black
  • Weight: 0.156 kg

How to use

Connect the HDMI source (for example a Blu-ray player or streaming device) to the transmitter HDMI input and connect the receiver local HDMI output to the display. Use a single Cat6 cable to link the transmitter and receiver over distances up to 50 m (165 ft). Ensure both units are powered from an appropriate 100–240V supply. For protected content, confirm connected devices support HDCP 2.2.

Usage recommendations

For best results use solid Cat6 cabling rated for in‑wall installation and avoid running the cable alongside strong sources of electromagnetic interference. Verify cable terminations and use short HDMI patch cables for local connections to minimise signal loss.

Specifications

Connectivity technology: The technology that enables connectivity of the device, e.g. wired or wireless.
Wired
Maximum resolution: The maximum number of pixels that can be displayed in the image. It is usually quoted as width × height,: for example, "1024 × 768" means the width is 1024 pixels and the height is 768 pixels.
3840 x 2160
Type: Characteristics of the device.
AV transmitter & receiver
All features

Logistics data

Products per master (outer) case:
20 pc(s)
Master (outer) case height:
282 mm
Master (outer) case length:
457 mm
Master (outer) case width:
375 mm
Harmonized System (HS) code:
85176200

Technical details

Sustainability certificates:
RoHS

Packaging content

IR blaster included:
Yes
IR receiver included:
Yes
Quick start guide: Instructions, either online, as a computer program or in paper form, to allow you to set up and start using the product quickly.
Yes
Included power plug types:
NA, ANZ, EU, JP, UK

Packaging data

Package weight: Weight of the packaged product.
777 g
Package height: The distance from the top to the bottom of the packaging.
70 mm
Package depth: The distance from the front to the back of the packaging.
220 mm
Package width: The distance from one side of the packaging to the other.
130 mm

Weight & dimensions

Weight: Weight of the product without packaging (net weight). If possible, the net weight is given including standard accessories and supplies. Please note that sometimes the manufacturer leaves out the weight of accessories and/or supplies.
0.156 kg
Height: The measurement of the product from head to foot or from base to top.
13 mm
Depth: The distance from the front to the back of something.
97 mm
Width: The measurement or extent of something from side to side.
70 mm

Operational conditions

Operating relative humidity (H-H):
0 - 80
Storage temperature (T-T): The minimum and maximum temperatures at which the product can be safely stored.
-20 - 60
Operating temperature (T-T): The minimum and maximum temperatures at which the product can be safely operated.
0 - 40

Power

Power plug type:
Type M
Output current:
1 A
Operating voltage (receiver):
12 V
Input current:
0.3
Operating voltage (transmitter):
12 V
AC input voltage: The voltage of the AC electricity that is inputted into the product.
100 - 240

Ports & interfaces

HDMI version:
2.0
HDMI in: Port (socket) for HDMI input.
1
Number of HDMI outputs: Port (socket) for HDMI output.
2
RJ-45 output ports:
1
RJ-45 input ports:
1
Connectivity technology: The technology that enables connectivity of the device, e.g. wired or wireless.
Wired

Features

Certification:
CE, FCC, REACH
Product colour: The colour e.g. red, blue, green, black, white.
Black
Supported graphics resolutions: The graphic resolutions that can be displayed by the device. The graphic resolution describes the width and height dimensions of a display, such as a computer monitor, measured in pixels.
3840 x 2160, 2560 x 1600 (WQXGA), 1920 x 1200 (WUXGA), 1920 x 1080 (HD 1080), 1280 x 720 (HD 720)
HDCP: High-bandwidth Digital Content Protection (HDCP) is a form of digital copy protection to prevent copying of digital audio and video content as it travels across connections.
Yes
HDCP version:
2.2
Audio output channels: An audio output channel is an electric circuit which acts as a path for a signal produced by a device. A device may have several audio output channels.
7.1
Maximum refresh rate:
60 Hz
Maximum transfer distance: The greatest distance over which the data/signal can be transferred.
50 m
Cable types supported:
Cat6
Maximum resolution: The maximum number of pixels that can be displayed in the image. It is usually quoted as width × height,: for example, "1024 × 768" means the width is 1024 pixels and the height is 768 pixels.
3840 x 2160
Type: Characteristics of the device.
AV transmitter & receiver

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Stock data
Available only for legal entities
Warehouse Stock Delivery to the store Store Price
WH109 8 19.10.2026
165.49 € Best price
WH15 5 05.10.2026 Best delivery
168.99 €
EU9 5 05.10.2026 Best delivery
182.49 €
Available only for legal entities
165.49 €
Stock: 8
Delivery Date: 19.10.2026
Warehouse: WH109
168.99 €
Stock: 5
Delivery Date: 05.10.2026 Best delivery
Warehouse: WH15
182.49 €
Stock: 5
Delivery Date: 05.10.2026 Best delivery
Warehouse: EU9

Customer reviews

Customer questions

FAQ

How much does the AV transmitter & receiver StarTech.com ST121HD20V cost, and is it available for purchase?

The price is 165.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 18 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 19.10.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

What payment options are available?

AiO.lv offers several payment methods: Bank transfer. All transactions are 100% secure and encrypted.

Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

What is the warranty period?

All StarTech products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized StarTech service centers and through AiO.lv

Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. We will assist with consultation, warranty claim processing, and coordination with certified service centers.

How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: connectivity technology, maximum resolution, type, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.

Where can I download the instructions for AV transmitter & receiver StarTech.com ST121HD20V?

You can download the instructions in PDF format from the “Instructions” section on the product description page. The file contains complete information about installation, setup, and usage.
warranty
14-Day Return Policy We are confident in our quality, but if the purchase doesn’t fit — you have 14 days to return the product with peace of mind.
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Fast Delivery Get your orders as quickly as possible — right to your door, parcel lockers, or pickup points across Latvia and the EU.
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Secure Payment Pay the way you prefer: cash, VISA, MasterCard, Apple Pay, Google Pay, bank transfer, or 0% installment plan.
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Quality Since 2008 AiO.lv has been on the market for over 18 years and has earned trust — with more than 6000 genuine positive reviews on Google.