# AV transmitter & receiver StarTech ST121SHD50

**URL:** https://aio.lv/en/product--startech-st121shd50--294325
**Data updated:** 2025-12-28 21:14 (EET)
**Category:** Audio & Video Extenders
**Manufacturer:** StarTech
**Manufacturer code:** ST121SHD50
**EAN:** 0065030851404
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 138.99 €
**Prices and availability valid until:** 2026-07-09 23:59
**Price without VAT (21%):** 114.87 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--startech-st121shd50--294325

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 10.07.2026 | free |
| Pickup points | 15.07.2026 | 1.99 EUR |
| Courier delivery to door | 15.07.2026 | 4.99 EUR |

## Summary description

The StarTech HDMI Over CAT5e/CAT6 Extender allows you to transmit HDMI signals up to 165 ft (50m) over Cat5e or Cat6 cables. It supports a maximum resolution of 1920 x 1080 pixels and features Power Over Cable technology for easy installation. The compact design of both transmitter and receiver (51 x 80 x 21 mm) makes it ideal for tight spaces. With a wide AC input voltage range of 100-240 V and low power consumption, this extender is perfect for various setups.

## Long description

The StarTech ST121SHD50 AV transmitter & receiver kit extends HDMI video and audio up to 165 ft (50 m) over dual Cat5e or Cat6 cables. The compact transmitter and receiver support full HD resolutions up to 1920 x 1080 (1080p) and include Power over Cable so only a single power adapter is required for either end. The kit is suitable for installations using new or existing Ethernet cabling and includes mounting hardware for flexible placement.
Advantages
This HDMI over Cat5e/Cat6 extender supports native 1080p video and accompanying digital audio while preserving EDID information through built-in monitor emulation for improved display compatibility. Power over Cable reduces the need for remote power outlets, and the units accept HDMI cables up to 32 ft (10 m) on both local and remote ends to extend reach. The compact black units have a wide AC input range (100–240 V) and are TAA compliant, backed by a 2-year StarTech warranty with lifetime technical support.
Suitable for
Extending HDMI from media players, PCs or set-top boxes to a remote display or projector
Digital signage installations in retail, hospitality or corporate environments
AV setups where power outlets are limited thanks to Power over Cable
Key specifications
Type: AV transmitter & receiver (kit)
Maximum resolution: 1920 x 1080 (1080p)
Maximum transfer distance: 50 m (165 ft) over dual Cat5e/Cat6
Cable types supported: Cat6, Cat5e
HDMI inputs: 1; HDMI outputs: 1
RJ-45 input ports: 2; RJ-45 output ports: 2
HDMI cable allowance: up to 10 m (32 ft) at local and remote ends
Product colour: Black
Manufacturer part number: ST121SHD50
How to use
Connect the HDMI source (Blu-ray player, PC, media player) to the transmitter unit’s HDMI input and connect the display to the receiver unit’s HDMI output. Run two Cat5e or Cat6 cables between the transmitter and receiver RJ-45 ports. Plug the included power adapter into either the transmitter or the receiver to enable Power over Cable and power both units. Ensure EDID settings are left at default for automatic resolution negotiation with the display.
Usage recommendations
Use quality Cat5e/Cat6 cables with proper termination and avoid running the Ethernet cable alongside high-voltage power lines to minimise interference. For best results at longer distances, use Cat6 where possible and test the HDMI connection before final mounting.

## Specifications

### Technical details

| Feature | Value |
|---|---|
| Compliance certificates | RoHS |

### Ports & interfaces

| Feature | Value |
|---|---|
| HDMI in | 1 |
| Number of HDMI outputs | 1 |
| RJ-45 input ports | 2 |
| RJ-45 output ports | 2 |
| DC-in jack | Yes |
| Ethernet LAN | Yes |
| Connectivity technology | Wired |

### Power

| Feature | Value |
|---|---|
| Power consumption (typical) | 18 W |
| External power adapter | Yes |
| Input current | 0.5 |
| Output current | 1.5 A |
| Operating voltage | 12 V |
| AC input voltage | 100-240 |
| Power plug type | Type M |

### Weight & dimensions

| Feature | Value |
|---|---|
| Receiver dimensions (WxDxH) | 51 x 80 x 21 |
| Receiver weight | 157 g |
| Transmitter dimensions (WxDxH) | 51 x 80 x 21 |
| Transmitter weight | 157 g |

### Operational conditions

| Feature | Value |
|---|---|
| Operating relative humidity (H-H) | 0 - 80 |
| Storage temperature (T-T) | -10 - 60 |
| Operating temperature (T-T) | 0 - 40 |

### Packaging data

| Feature | Value |
|---|---|
| Package weight | 935 g |
| Package depth | 237 mm |
| Package height | 65 mm |
| Package width | 157 mm |

### Packaging content

| Feature | Value |
|---|---|
| AC adapter included | Yes |
| Cables included | HDMI |
| Manual | Yes |
| Mounting brackets included | Yes |

### Features

| Feature | Value |
|---|---|
| Type | AV transmitter & receiver |
| Maximum resolution | 1920 x 1080 |
| Cable types supported | Cat6, Cat5e |
| Maximum transfer distance | 50 m |
| Certification | CE, FCC, REACH, TAA |
| Rack mounting | Yes |
| Material | Aluminium |
| Product colour | Black |
| Supported graphics resolutions | 1920 x 1080 (HD 1080) |
| Supported video modes | 1080p, 1080i |
| Daisy chain | No |
| LED indicators | Power |

### Logistics data

| Feature | Value |
|---|---|
| Master (outer) case height | 260 mm |
| Master (outer) case width | 320 mm |
| Master (outer) case length | 410 mm |
| Products per master (outer) case | 12 pc(s) |

## FAQ

### How much does the AV transmitter & receiver StarTech ST121SHD50 cost, and is it available for purchase?

The price is 138.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 14 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 10.07.2026 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. 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. More information about warranty service: https://aio.lv/en/warranty

### How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: hdmi in, number of hdmi outputs, rj-45 input ports, rj-45 output ports, type, maximum resolution, maximum transfer distance, cable types supported, product colour, 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 ST121SHD50?

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.

## Image

https://aio.lv/img/cache/product/294325/65766475_large.webp