# AV transmitter & receiver StarTech ST121HDBTPW

**URL:** https://aio.lv/en/product--startech-st121hdbtpw--294346
**Data updated:** 2025-12-28 21:14 (EET)
**Category:** Audio & Video Extenders
**Manufacturer:** StarTech
**Manufacturer code:** ST121HDBTPW
**EAN:** 0065030854177
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 477.49 €
**Prices and availability valid until:** 2026-07-05 23:59
**Price without VAT (21%):** 394.62 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--startech-st121hdbtpw--294346

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 19.06.2026 | free |
| Pickup points | 26.06.2026 | 1.99 EUR |
| Courier delivery to door | 26.06.2026 | 4.99 EUR |

## Summary description

The StarTech HDMI over CAT5e HDBaseT Extender supports resolutions up to 4096 x 2160 pixels. It operates on 100-240 V AC and 12 V DC with a current of 0.5 A. This compact device measures 67 mm in width, 80 mm in depth, and 25 mm in height. It includes LAN (RJ-45) cables and power plugs for AU, EU, NA, and UK. Ideal for extending HDMI signals over long distances using Cat5e or Cat6 cables.

## Long description

The StarTech AV transmitter & receiver ST121HDBTPW extends HDMI signals up to 330 ft (100 m) over a single CAT5e or CAT6 cable using HDBaseT technology. It supports Ultra HD (up to 4096 x 2160) and Full HD (1080p) video, 3D and 7.1 digital audio. The kit includes both a transmitter and receiver and can supply power to the receiver via Power over Cable (POC), reducing the need for multiple power sources. The compact, black units include LAN (RJ-45) cables and power plugs for AU, EU, NA and UK, and are suitable for installations such as digital signage in commercial, education and healthcare environments.
Advantages
This HDBaseT extender transmits uncompressed HDMI audio and video with zero latency and extends distances far beyond standard HDMI cables while preserving 4K image quality. Single-cable installation over existing CAT5e/CAT6 infrastructure simplifies installation and reduces cabling complexity. Power over Cable capability lets the transmitter power the receiver from the same power source, and included mounting hardware supports tidy, professional installations. The unit is TAA compliant and comes with a 2-year manufacturer warranty and lifetime technical support.
Suitable for
Long-distance HDMI extension for digital signage
AV distribution in shopping centers, stadiums, schools and hospitals
Rooms or areas with limited power outlets
Professional AV installations requiring clean, single-cable runs
Key specifications
Model: StarTech ST121HDBTPW
Type: AV transmitter & receiver
Maximum resolution: 4096 x 2160 (4K)
Maximum transfer distance: 100 m (330 ft) over Cat5e/Cat6
Inputs/outputs: 1 HDMI input, 1 HDMI output, 1 RJ-45 input, 1 RJ-45 output
Audio: Supports 7.1 digital audio and 3D
Power: 100–240 V AC input; 12 V DC, 0.5 A; Power over Cable (POC) supported
Dimensions (W×D×H): 67 × 80 × 25 mm
Weight: 0.423 kg
Colour: Black
Includes: LAN (RJ-45) cables, AU/EU/NA/UK power plugs, mounting hardware
How to use
Connect the HDMI source to the transmitter unit and the display to the receiver unit. Run a single Cat5e or Cat6 cable between the transmitter and receiver RJ-45 ports, observing cable quality and length limits up to 100 m. Apply power to the transmitter (or receiver) using the supplied power adapter; if using Power over Cable, a single powered unit will supply both ends according to the kit instructions. Configure any required source or display settings (resolution, audio format) to match the capabilities of the connected devices.
Usage recommendations
For best performance, use high-quality Cat6 or Cat6a cable for runs approaching the maximum distance, keep cable runs away from high-voltage or noisy electrical equipment, and verify display and source HDMI settings to ensure 4K/60Hz or required audio formats are selected. Follow local mounting and safety guidelines when installing the units.

## 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 |

### 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 |
|---|---|
| Weight | 0.423 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 | 1200 g |
| Package depth | 295 mm |
| Package height | 72 mm |
| Package width | 196 mm |

### Packaging content

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

### Features

| Feature | Value |
|---|---|
| Type | AV transmitter & receiver |
| Maximum resolution | 4096 x 2160 |
| Cable types supported | Cat5e, Cat6 |
| Maximum transfer distance | 100 m |
| Certification | CE, FCC, TAA |
| Audio system | Multichannel |
| Material | Aluminium |
| Product colour | Black |
| Audio output channels | 7.1 |
| Supported graphics resolutions | 1280 x 720 (HD 720), 4096 x 2160, 3840 x 2160, 2560 x 1600 (WQXGA), 1920 x 1200 (WUXGA), 1920 x 1080 (HD 1080) |
| Supported video modes | 1080p, 720p, 2160p |
| Maximum refresh rate | 60 Hz |
| Daisy chain | No |
| HDBaseT certified | Yes |
| LED indicators | Status |
| Rubber feet | Yes |

### Logistics data

| Feature | Value |
|---|---|
| Master (outer) case height | 325 mm |
| Master (outer) case width | 405 mm |
| Master (outer) case length | 450 mm |
| Products per master (outer) case | 12 pc(s) |

## FAQ

### How much does the AV transmitter & receiver StarTech ST121HDBTPW cost, and is it available for purchase?

The price is 477.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 5 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 19.06.2026 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, 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 AV transmitter & receiver StarTech ST121HDBTPW?

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/294346/65766488_large.webp