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header-product AV transmitter & receiver StarTech ST121HD20FXA2 4K HDMI over Fiber Extender Kit 4K 60Hz 3300ft
670.99 €

AV transmitter & receiver StarTech ST121HD20FXA2 4K HDMI over Fiber Extender Kit 4K 60Hz 3300ft

AV transmitter & receiver StarTech ST121HD20FXA2 Photo 1
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AV transmitter & receiver StarTech ST121HD20FXA2 4K HDMI over Fiber Extender Kit 4K 60Hz 3300ft

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AV transmitter & receiver StarTech ST121HD20FXA2 4K HDMI over Fiber Extender Kit 4K 60Hz 3300ft

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Short description

The StarTech ST121HD20FXA2 is an AV transmitter and receiver kit that supports 4K resolution at 60Hz over fiber optic cables. It can transmit signals up to 3300ft for single mode and 1000ft for multimode. The kit includes features like HDR, HDCP support, and additional audio/RS232/IR extension capabilities, making it ideal for professional AV setups.
Available at price 670.99 €: 2 pcs.
Total available for order: 6 pcs.
Warranty: 2 Years
SKU: 10973315
Manufacturer: StarTech
Charging device included Charging device included
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
12.10.2026 {{selectedOffer.officeDeliveryString}}
free
Courier Delivery Please note that in case of a large parcel additional delivery costs may apply!
15.10.2026 {{selectedOffer.courierDeliveryString}}
From 4.99 € (Weight: 1.00 kg)
Parcel couriers
Unisend LV / Venipak Pickup LV / Venipak Locker LV / DPD Paku skapis / Omniva LV / Latvijas Pasts pakomāts / Latvijas Pasts nodaļa
15.10.2026 {{selectedOffer.parcelStationDeliveryString}}
From 1.99 €
payment
Payment Methods:
Cash payment, Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Leasing for legal entities
Leasing for legal entities: from 23.35 euros per month
Available for private customers at price 774.49 €: 2 pcs.
Together cheaper
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Product information

Description

The StarTech ST121HD20FXA2 is an AV transmitter and receiver kit that extends an HDMI audio and video signal over single-strand optical fiber. It supports Ultra HD 4K (4096 x 2160) at 60Hz with up to 7.1 channel audio and transmits up to 3300 ft (1000 m) over single-mode fiber or up to 1000 ft (300 m) over multimode fiber. The kit includes a transmitter and receiver, local HDMI output, IR and RS232 extension, EDID copy functionality, LED status indicators, and ESD protection.

Advantages

The fiber-based connection provides full-bandwidth video with immunity to electromagnetic interference, enabling reliable signal distribution in challenging environments. The kit supports audio extraction via a 3.5 mm output while simultaneously passing audio over HDMI, offers plug-and-play point-to-point installation without IP configuration or drivers, and includes mounting brackets and a durable steel housing for secure installation. Built-in IR and RS232 extension and EDID copy simplify integration with projectors and AV equipment.

Suitable for

  • Professional AV installations in auditoriums and conference rooms
  • Digital signage and long-run HDMI distribution
  • Lecture halls and education facilities with centralized AV control
  • Environments with high electromagnetic interference or long cable runs

Key specifications

  • Model: StarTech ST121HD20FXA2
  • Type: AV transmitter & receiver kit
  • Maximum resolution: 4096 x 2160 at 60Hz
  • Audio: up to 7.1 channel; 3.5 mm audio extraction on receiver
  • Fiber type: single-mode and multimode (single-strand LC)
  • Maximum distance: up to 1000 m (single-mode) / up to 300 m (multimode)
  • HDMI inputs/outputs: 1 HDMI input; local HDMI output on receiver
  • Additional interfaces: IR extension, RS232 (serial)
  • Housing: black steel with mounting brackets
  • ESD protection: 8 kV air / 6 kV contact
  • Warranty: 2 years with 24/5 technical support

How to use

Install the transmitter near the HDMI source and the receiver near the display. Connect the transmitter HDMI input to the source device and use a single-strand LC fiber cable between transmitter and receiver. Attach the local HDMI output on the receiver to a display if required. If audio extraction is needed, connect speakers or an amplifier to the receiver’s 3.5 mm output. Use the IR or RS232 ports to extend remote control or serial control signals to the remote equipment. Power both units and verify LED indicators to confirm link and power status.

Usage recommendations

For best results use certified single-mode fiber for long runs (up to 1000 m) or multimode fiber for shorter distances (up to 300 m), ensure connectors are clean to avoid signal loss, and verify EDID settings when connecting displays with unique resolutions or HDR requirements.

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.
4096 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:
402 mm
Master (outer) case length:
530 mm
Master (outer) case width:
325 mm

Technical details

Sustainability compliance:
Yes
Sustainability certificates:
RoHS, CE

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
AC adapter included:
Yes

Packaging data

Package weight: Weight of the packaged product.
1000 g
Package height: The distance from the top to the bottom of the packaging.
60 mm
Package depth: The distance from the front to the back of the packaging.
300 mm
Package width: The distance from one side of the packaging to the other.
200 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.
0.28 kg
Height: The measurement of the product from head to foot or from base to top.
18 mm
Depth: The distance from the front to the back of something.
134 mm
Width: The measurement or extent of something from side to side.
68 mm

Operational conditions

Operating relative humidity (H-H):
20 - 90
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
Input current:
0.35
Operating voltage: Defines the range of operating voltages available
5 V
AC input voltage: The voltage of the AC electricity that is inputted into the product.
100 - 240

Ports & interfaces

DC-in jack: The socket/plug where the DC electricity supply connects to the device.
Yes
Serial interface type:
RS-232
Serial ports quantity: The number of serial ports in a computer or peripheral. A serial port is a serial communication physical interface through which information transfers in or out one bit at a time. The term "serial port" usually identifies hardware more or less compliant to the RS-232 standard, intended to interface with a modem or with a similar communication device. In modern computers and peripherals, serial ports have largely been replaced by USBs and other interfaces.
2
Line-in:
Yes
Remote (IR) input:
2
Remote (IR) output:
2
Line outputs (RCA):
1
USB connector type: The type of USB connector/port that this product has.
Micro-USB B
USB ports quantity:
2
Fiber ports quantity: The number of sockets (ports) for fibers (cables).
2
Fiber optic connector: This terminates the end of an optical fiber, and enables quicker connection and disconnection than splicing. The connectors mechanically couple and align the cores of fibers so light can pass. Better connectors lose very little light due to reflection or misalignment of the fibers. In all there have been about 100 types of optic fiber connectors produced.
LC
HDMI version:
2.1
HDMI in: Port (socket) for HDMI input.
1
Number of HDMI outputs: Port (socket) for HDMI output.
2
Connectivity technology: The technology that enables connectivity of the device, e.g. wired or wireless.
Wired

Features

Product colour: The colour e.g. red, blue, green, black, white.
Black
LED indicators:
Power, Activity
Bandwidth:
18 Gbit/s
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
Baud rate:
115.2 Kbit/s
HDCP version:
2.2
Electrostatic Discharge (ESD) protection:
8 kV
Infrared (IR) frequency range:
20 - 60
Electrostatic Discharge (ESD) protection:
Yes
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
Extended display identification data (EDID):
Yes
Maximum refresh rate:
60 Hz
Fiber mode structure:
Single-mode, Multi-mode
High Dynamic Range (HDR) technology:
High Dynamic Range 10 (HDR10)
High Dynamic Range (HDR) supported:
Yes
Chipset: Set of electronic components in an integrated circuit that manages the data flow between the processor, memory and peripherals. It is usually found in the motherboard of a computer. Chipsets are usually designed to work with a specific family of microprocessors. Because it controls communications between the processor and external devices, the chipset plays a crucial role in determining system performance.
SiFotonics SD1503/SD1513
Maximum transfer distance: The greatest distance over which the data/signal can be transferred.
1000 m
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.
4096 x 2160
Type: Characteristics of the device.
AV transmitter & receiver

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Stock data
Warehouse Stock Delivery to the store Store Price
WH354 2 28.09.2026 Best delivery
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Available only for legal entities
Warehouse Stock Delivery to the store Store Price
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EU9 2 28.09.2026 Best delivery
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Customer reviews

Customer questions

FAQ

How much does the AV transmitter & receiver StarTech ST121HD20FXA2 cost, and is it available for purchase?

The price is 670.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 6 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 12.10.2026 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: Cash payment, Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Leasing for legal entities. 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 ST121HD20FXA2?

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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