# Digital signage flat panel Dahua Technology LDH55-SAI400K 55" LED 4K Ultra HD

**URL:** https://aio.lv/en/product--dahua-dhi-ldh55-sai400k--11587617
**Data updated:** 2026-01-15 13:47 (EET)
**Category:** Monitors
**Manufacturer:** DAHUA
**Manufacturer code:** DHI-LDH55-SAI400K
**EAN:** 6939554907920
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 1 444.49 €
**Prices and availability valid until:** 2026-08-09 23:59
**Price without VAT (21%):** 1 193.79 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--dahua-dhi-ldh55-sai400k--11587617

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 10.08.2026 | free |
| Pickup points | 13.08.2026 | 1.89 EUR |
| Courier delivery to door | 13.08.2026 | 4.99 EUR |

## Summary description

The Dahua Technology LDH55-SAI400K is a 55-inch digital signage flat panel featuring LED technology and a 4K Ultra HD resolution of 3840 x 2160 pixels. With a brightness of 320 cd/m² and an integrated Android 8.1 processor, it is designed for effective digital signage applications, providing clear and vibrant visuals suitable for various environments.

## Long description

The Dahua Technology LDH55-SAI400K is a 55" LED digital signage flat panel with 4K Ultra HD (3840 x 2160) resolution and 320 cd/m² brightness. The unit features a full metal casing, industrial-grade panel and an integrated Android 8.1 platform that supports unified remote management for system integrators and media operators. It combines a 4-core processor for strong decoding performance, built-in 10 W speakers and multiple installation modes to suit different project requirements.
Advantages
High-quality industrial design with full metal housing improves durability and heat dissipation. The integrated Dahua MPS platform enables centralized remote management, simplifying content delivery and maintenance. A 4-core processor delivers reliable decoding and smooth playback of 4K content, while the LED 55" panel provides sharp visuals at 3840 x 2160 resolution. Built-in speakers and support for various mounting options make the panel ready for a wide range of indoor digital signage installations.
Suitable for
Retail signage and point-of-sale displays
Information screens in transport hubs and public buildings
Corporate lobbies and meeting-room displays
Hospitality and menu boards
Exhibition and event digital displays
Key specifications
Display diagonal: 55" (139.7 cm)
Resolution: 3840 x 2160 (4K Ultra HD)
Display technology: LED
Brightness: 320 cd/m²
Response time: 8 ms
Contrast ratio (typical): 1000:1
Built-in audio: 10 W speakers
Network: Ethernet LAN
Mounting: VESA compatible
Colour: Black
Integrated platform: Android 8.1 with Dahua MPS support
Processor: 4-core for media decoding
Energy efficiency (SDR): class G; energy consumption ~80 kWh/1000 h
How to use
Install the panel using appropriate VESA mounting hardware or use an approved installation mode for the project. Connect the panel to power and a content network via Ethernet, then configure the built-in Android platform and Dahua MPS for remote content management. Upload or schedule signage content through the management platform, adjust display settings (brightness, contrast, audio) as needed, and verify playback performance. Ensure adequate ventilation around the metal housing to maintain optimal operating temperature.
Usage recommendations
For reliable long-term operation, use stable network connectivity for remote management, schedule regular software updates through the Dahua MPS platform, and maintain ventilation clearance around the unit. For best image quality in bright environments, verify and, if necessary, increase panel brightness and contrast settings.

## Specifications

### Display

| Feature | Value |
|---|---|
| Display diagonal | 55 " |
| Display technology | LED |
| HD type | 4K Ultra HD |
| Display resolution | 3840 x 2160 |
| Response time | 8 ms |
| Contrast ratio (typical) | 1000:1 |
| Display brightness | 320 cd/m² |
| Viewing angle, vertical | 178 ° |
| Viewing angle, horizontal | 178 ° |
| Native aspect ratio | 16:9 |
| Display number of colours | 1.07 billion colours |
| Touchscreen | No |
| Panel life | 30000 h |

### Design

| Feature | Value |
|---|---|
| Product colour | Black |
| Placement supported | Indoor |
| Panel mounting interface | 400 x 400 |
| Product design | Digital signage flat panel |
| Orientation | Horizontal/Vertical |

### Ports & interfaces

| Feature | Value |
|---|---|
| DVI port | No |
| HDMI ports quantity | 1 |
| Ethernet LAN (RJ-45) ports | 1 |
| PC Audio in | Yes |
| RS-232 interface | Yes |
| USB ports quantity | 2 |
| USB port | Yes |
| Compatible memory cards | MicroSD (TransFlash) |
| Card reader integrated | Yes |
| HDMI input ports quantity | 1 |

### Ergonomics

| Feature | Value |
|---|---|
| VESA mounting | Yes |

### Audio

| Feature | Value |
|---|---|
| Number of built-in speakers | 2 |
| Built-in speaker(s) | Yes |

### Performance

| Feature | Value |
|---|---|
| Purpose | Universal |
| Operating system installed | Android 8.1 |

### Network

| Feature | Value |
|---|---|
| Ethernet LAN | Yes |
| Wi-Fi | No |

### Multimedia

| Feature | Value |
|---|---|
| RMS rated power | 10 W |

### Thin Client

| Feature | Value |
|---|---|
| Built-in processor | Yes |
| Processor model | A17 |
| Processor cores | 4 |

### Computer system

| Feature | Value |
|---|---|
| Processor family | ARM Cortex |
| Audio formats supported | WAV, MP3, WMA |
| Image formats supported | BMP, GIF, JPEG, JPG, PNG |
| Video formats supported | AVI, MKV, MOV, MP4, WMV, ASF |
| Internal storage capacity | 16 GB |
| Processor frequency | 1.8 GHz |
| Internal memory | 2 GB |
| Computer system | Yes |

### Power

| Feature | Value |
|---|---|
| Energy efficiency class (SDR) | G |
| Energy consumption (SDR) per 1000 hours | 80 kWh |
| Power consumption (typical) | 180 W |
| Power consumption (standby) | 0.5 W |
| AC input frequency | 50 - 60 |
| AC input voltage | 100 - 240 |
| Energy efficiency scale | A to G |

### Weight & dimensions

| Feature | Value |
|---|---|
| Display depth | 58.3 mm |
| Display height | 701.8 mm |
| Display weight | 18000 g |
| Display width | 1230.8 mm |

### Operational conditions

| Feature | Value |
|---|---|
| Operating relative humidity (H-H) | 10 - 85 |
| Operating temperature (T-T) | 0 - 40 |

### Packaging content

| Feature | Value |
|---|---|
| Cables included | AC |
| Mounting kit | Yes |

### Packaging data

| Feature | Value |
|---|---|
| Package weight | 25800 g |
| Package depth | 165 mm |
| Package height | 830 mm |
| Package width | 1360 mm |

## FAQ

### How much does the Digital signage flat panel Dahua Technology LDH55-SAI400K cost, and is it available for purchase?

The price is 1,444.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 2 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 10.08.2026 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, 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 DAHUA 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 DAHUA 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: display diagonal, display resolution, hd type, display technology, response time, contrast ratio (typical), vesa mounting, built-in speaker(s), energy efficiency class (sdr), energy consumption (sdr) per 1000 hours, 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 Digital signage flat panel Dahua Technology LDH55-SAI400K?

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/11587617/66693195_large.webp