Introduction

55” 4K Digital Signage Display
The QM5503 is a professional-grade 55-inch 4K UHD digital signage display built for the demands of commercial spaces. It delivers vivid visuals with a slim and lightweight design that allows for easy installation and a modern aesthetic. The anti-glare screen and high brightness ensure excellent legibility in bright or mixed-light settings. Engineered for 24/7 operation, it supports both portrait and landscape modes and features AG Neovo’s Anti-Burn-in™ technology for dependable longevity. USB Type-C connectivity allows for streamlined media input, making it ideal for retail, hotels, transport hubs, and other public-facing commercial applications.

Slim Profile for Space-Conscious Installations
The QM5503’s slim, lightweight profile enables seamless integration into confined or space-limited environments such as point-of-sale counters, wall-mounted retail spaces, or corridor signage—maintaining a clean and professional look.

True 4K for High-Impact Visuals
With true 4K UHD resolution, the display delivers crisp, finely detailed images—perfect for engaging shoppers in retail spaces or delivering clear messaging in hospitality and commercial settings.

500 nits Brightness for Indoor Visibility
With a brightness level of 500 nits, the QM5503 ensures vivid, eye-catching visuals that remain impactful even in brightly lit indoor environments.

Anti-Glare Surface for Enhanced Readability
The anti-glare coating significantly reduces reflections and glare, improving legibility under varying lighting conditions—ideal for high-traffic indoor use.

Wide Viewing Angle for Consistent Visual Quality
Equipped with a wide viewing angle panel, the QM5503 ensures accurate colour and clarity from all perspectives—suitable for overhead, wall-mounted, or eye-level display placements.

Patented ANTI-BURN-IN™ Technology
AG Neovo’s proprietary Anti-Burn-in™ Technology protects against ghosting and image retention—extending panel lifespan and ensuring visual consistency over long usage periods.

Flexible Installation in Landscape or Portrait
Supports both horizontal and vertical orientations—giving you the freedom to adapt the display layout to different signage needs across commercial environments.

Designed for Performance. Built for Commercial Use
USB Type-C Connectivity for Simplified Media Playback

Streamline your setup with USB Type-C—enable media transmission and power via a single cable, reducing clutter and speeding up installation.

Built-in Audio with Optional External Output
Includes two built-in 10W speakers for onboard audio delivery—ideal for use without additional speakers. A 3.5 mm audio-out jack allows connection to external sound systems when required.

Seamless Remote Management Across Devices
Neovo Controller software allows intuitive remote management of multiple displays. Control power, input source, brightness, and more across different locations—enhancing operational efficiency for digital signage deployments.

RS232 and LAN for Centralised Management
Easily integrate the QM5503 with AV control systems via RS232, or manage the displays across networks using LAN—ideal for multi-site signage setups such as shopping centres, airports, or universities.

Flexible Connectivity with Built-In Media Playback
Featuring dual HDMI 2.0 inputs and a USB 2.0 port, the QM5503 provides reliable and flexible connectivity—ideal for seamless media playback, straightforward maintenance, and integration within commercial digital signage networks.

Display

Native aspect ratio

16:9

Native refresh rate

60 Hz

Panel type

VA

LED backlight

Yes

Display diagonal

139.7 cm (55")

Display technology

LED

Display resolution

3840 x 2160 pixels

Display brightness

500 cd/m²

HD type

4K Ultra HD

Touchscreen

No

Response time

5 ms

Contrast ratio (typical)

5000:1

Viewing angle, horizontal

178°

Viewing angle, vertical

178°

Display number of colours

1.07 billion colours

Pixel pitch

0.315 x 0.315 mm

Horizontal scan range

15 - 135 kHz

Vertical scan range

24 - 85 Hz

High Dynamic Range (HDR) supported

Yes

Haze rate

25%

Surface hardness

3H

Ports & interfaces

HDMI ports quantity

2

HDMI version

2.0

HDMI input ports quantity

2

DVI port

No

USB port

Yes

USB 3.2 Gen 1 (3.1 Gen 1) Type-C ports quantity

1

Ethernet LAN

Yes

Ethernet LAN (RJ-45) ports

1

Wi-Fi

No

RS-232 interface

Yes

Audio

Built-in speaker(s)

Yes

Number of built-in speakers

2

RMS rated power

20 W

Design

Product design

Digital signage flat panel

Placement supported

Indoor

Orientation

Horizontal/Vertical

Product colour

Black

Screen shape

Flat

VESA mounting

Yes

Panel mounting interface

400 x 400 mm

Anti-glare screen

Yes

Performance

Purpose

Commercial

Operating hours (hours/days)

24/7

Power

Power consumption (typical)

135 W

Power consumption (standby)

0.5 W

Energy efficiency class (SDR)

G

Energy efficiency class (HDR)

G

Energy consumption (SDR) per 1000 hours

134 kWh

Energy consumption (HDR) per 1000 hours

143 kWh

AC input voltage

100 - 240 V

AC input frequency

50 - 60 Hz

Energy efficiency scale

A to G

Computer system

Computer system

No

Built-in processor

No

Other features

Power supply type

Internal

Quick start guide

Yes

Audio output

3.5mm

Weight & dimensions

Display width

1238.4 mm

Display depth

70 mm

Display height

709.2 mm

Display weight

13 kg

Packaging data

Package width

1390 mm

Package depth

144 mm

Package height

830 mm

Package weight

17.6 kg

Packaging content

Remote control included

Yes

Batteries included

Yes

Power adapter included

Yes

Cables included

HDMI

Operational conditions

Operating temperature (T-T)

0 - 40 °C

Operating relative humidity (H-H)

20 - 80%

Storage temperature (T-T)

-20 - 60 °C

Storage relative humidity (H-H)

20 - 80%

Technical details

USB playback

Yes

Compliance certificates

CE, EAC, Federal Communications Commission (FCC), ICES, Low Voltage Directive (LVD), REACH, RoHS, UKCA, WEEE