# HDBaseT HDMI over CAT5e Extender (Transmitter & Receiver) Sonstige ST121HDBTE — Ultra HD 4K, PoC, Cat5e/Cat6, 4096x2160

**URL:** https://aio.lv/en/product--sonstige-st121hdbte--12087642
**Data updated:** 2026-03-13 14:28 (EET)
**Category:** Audio & Video Extenders
**Manufacturer:** Sonstige
**Manufacturer code:** ST121HDBTE
**EAN:** 0065030851107
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 272.99 €
**Prices and availability valid until:** 2026-07-15 23:59
**Price without VAT (21%):** 225.61 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--sonstige-st121hdbte--12087642

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 01.07.2026 | free |
| Pickup points | 06.07.2026 | 1.99 EUR |
| Courier delivery to door | 06.07.2026 | 4.99 EUR |

## Summary description

Wired AV extender kit (transmitter and receiver) Sonstige ST121HDBTE uses HDBaseT to transmit HDMI signals over Cat5e/Cat6 up to Ultra HD 4K (4096×2160). Supports Power over Cable (PoC) with 12 V operating voltage and AC 110–240 V input. Designed for AV distribution, digital signage, presentations and remote displays where long-distance HDMI over structured cabling is required.

## Long description

Extend HDMI® up to 230ft (70m) over a single CAT5e/6 cable with Power over Cable to Receiver

The StarTech.com HDBaseT extender kit, extends HDMI up to 230 feet (70 Meters) over a single CAT5e or CAT6 cable. The extender supports Ultra HD and Full HD resolutions (4K / 1080p) with support for 3D and the accompanying digital audio. For added versatility, both the transmitter and receiver can be powered by the same single power source using Power Over Cable (POC). The versatility of this video extender makes it an ideal solution for digital signage applications in large buildings such as commercial shopping centers, stadiums, schools, and hospitals.

What is HDBaseT?

HDBaseT is a standardized, zero latency, video distribution technology that’s revolutionizing HDMI distribution. HDBaseT uses an advanced method of modulation that enables you to distribute uncompressed HDMI audio and video along with additional signals such as 100BaseT Ethernet, IR, RS-232 serial and power over cable.

Extend more with HDBaseT

The extender offers HDBaseT technology with HDMI and Power in a single extender kit, for complete end-to-end solution. Offering greater versatility than traditional HDMI extenders or HDMI cabling alone HDBaseT is the clear choice for every integrator and system designer. The added benefit of power over cable means you’ll only need one power source at either side of your extension, great for extending video to areas where power outlets may be limited, such as industrial sites.

Astonishing 4K picture quality from an impressive distance

With the A/V industry quickly adopting 4K as the new high-resolution video standard, long range video distribution can be a challenge with standard HDMI cables beginning signal degradation at 30 feet.

With support for 4K you’ll be amazed at how HDBaseT maintains your Ultra HD picture quality, four times the resolution of high-definition 1080p, even at 130 feet away from your video source. Plus, because the extender supports High-Definition 1080p and lower resolutions at 230 feet away, you can comfortably use this extender to make any video source look great.

Simplify your setup

This extender has been specially crafted for a smooth, tidy installation. HDBaseT technology allows for single cable installation, for seamless integration using existing CAT5e or CAT6 infrastructure, avoiding the hassle of running multiple Ethernet cables while, reducing potential failure points. Plus, the added benefit of power over cable means you’ll only need one power source to power both your extender and receiver, great for extending to areas where power outlets may be limited. Mounting hardware is also included for both the extender and receiver for discrete, professional mounting.

The ST121HDBTE is TAA compliant and backed by a 2-year StarTech.com warranty with free lifetime technical support.Key Features
Extend video where power outlets are limited with power over cable that powers both the transmitter and receiver using a single power source at either side of the connection
Maintains astonishing picture quality up to 115 ft. (35 m) away, with support for UltraHD 4K over non-proprietary CAT5e or CAT6 cabling
Also supports HD video resolutions such as 1920x1200 or 1080p at distances up to 230 ft. (70m)
Hassle-free, professional installation with included mounting brackets, and full video extension over one CAT5 cable
70m (230ft) maximum Cat5 cable distance
No software/drivers required
Mounting Hardware Included
Dolby® TrueHD, DTS-HD MA Audio
AV transmitter & receiver 4096 x 2160 pixels Black
Maximum transfer distance: 70 m
60 Hz
7.1 channels
Wired DC-in jack
3 W

## Specifications

### Technical details

| Feature | Value |
|---|---|
| Audio support | Yes |
| Compliance certificates | RoHS |

### Ports & interfaces

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

### Power

| Feature | Value |
|---|---|
| Power consumption (typical) | 3 W |
| Input current | 0.5 |
| Output current | 1.5 A |
| Operating voltage | 12 V |
| AC input voltage | 110 - 240 |
| Power plug type | Type M |

### Weight & dimensions

| Feature | Value |
|---|---|
| Weight | 0.428 kg |
| Height | 25 mm |
| Width | 67 mm |
| Depth | 80 mm |

### 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 | 1100 g |
| Package depth | 156 mm |
| Package height | 65 mm |
| Package width | 235 mm |

### Packaging content

| Feature | Value |
|---|---|
| AC adapter included | Yes |
| Cables included | LAN (RJ-45) |
| Manual | Yes |
| Mounting brackets included | Yes |
| Included power plug types | AU, EU, NA, UK |
| Grounding wire | Yes |

### Features

| Feature | Value |
|---|---|
| Type | AV transmitter & receiver |
| Maximum resolution | 4096 x 2160 |
| Cable types supported | Cat5e, Cat6 |
| Maximum transfer distance | 70 m |
| Certification | CE, FCC, HDBT, TAA |
| Audio system | Multichannel |
| Material | Aluminium |
| Cable length | 0.1 m |
| Product colour | Black |
| Audio output channels | 7.1 |
| Supported graphics resolutions | 1920 x 1200 (WUXGA), 1280 x 720 (HD 720), 4096 x 2160, 2560 x 1600 (WQXGA), 1920 x 1080 (HD 1080) |
| Supported video modes | 720p, 1080p |
| Maximum refresh rate | 60 Hz |
| Daisy chain | No |
| Mean time between failures (MTBF) | 52000 h |
| LED indicators | Status |

### Logistics data

| Feature | Value |
|---|---|
| Master (outer) case height | 257 mm |
| Master (outer) case width | 325 mm |
| Master (outer) case length | 411 mm |
| Products per master (outer) case | 12 pc(s) |

## FAQ

### How much does the Sonstige ST121HDBTE HDBaseT HDMI over CAT5e Extender cost, and is it available for purchase?

The price is 272.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 48 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 01.07.2026 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: Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment. All transactions are 100% secure and encrypted.

### Can Sonstige ST121HDBTE HDBaseT HDMI over CAT5e Extender be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### 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 Sonstige 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 Sonstige 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, weight, 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 Sonstige ST121HDBTE HDBaseT HDMI over CAT5e Extender?

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/12087642/67627899_large.webp