Viewsonic · MPN: CDE55G3-1C
£950.99
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Key specs

  • Panel typeTFT
  • Display diagonal139.7 cm (55")
  • Display resolution3840 x 2160 pixels
  • Response time6.5 ms
  • Weight16.7 kg
All specifications

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Viewsonic 55“ 4K OS-Free Commercial Display
Now £950.99

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Overview

The ViewSonic CDEG3 Series is an OS-free commercial display designed for secure, round-the-clock operation in mission-critical environments across corporate, government, healthcare, and higher education sectors. By eliminating pre-installed apps and background services, it reduces software attack surface while supporting fast boot times and simplified IT management. With native 4K UHD resolution in both landscape and portrait orientation, 500-nit brightness, and built-in USB media playback, this secure signage solution ensures clear visibility for announcements and digital displays in high-traffic environments. It also features extended connectivity options including USB-C, HDMI 2.1, LAN, and RS-232, making it well-suited for BYOD meetings and video conferencing. To further streamline remote device management, the commercial-grade display integrates with leading ProAV control systems. Certified EPEAT® Gold, CDEG3 Series digital displays offer a low-maintenance, sustainable solution that balances security, performance, and operational efficiency for any mission-critical space.

Purpose-Built for Security-Sensitive Environments
The CDEG3 Series enhances security by adopting an OS-free architecture with no pre-installed apps, background services, or third-party systems. This design reduces software attack surface and simplifies long-term device management for corporate offices, government institutions, hospitals, and other sensitive environments.

Fast Cold Boot for Seamless Communication
With cold boot in under 8 seconds*, the CDEG3 Series eliminates delays at the start of meetings, presentations, and scheduled signage. This commercial-grade display ensures content appears exactly when it’s needed, operating 24/7 in corporate, retail, and education environments where every second counts.*Cold boot under 8 seconds supported via HDMI 2 and 3 only.

Universal Connectivity for BYOD Setups
This presentation display supports BYOD in classrooms and meeting rooms with USB-C (DP1.2, HDCP) and HDMI 2.1 ports, allowing both guest and internal users to connect personal devices and share content securely without accessing the internal network.

Landscape and Portrait Orientation
Supporting both landscape and portrait modes, this commercial-grade display adapts to a wide range of installation needs, from digital menu boards to meeting room signage, and school displays.

Bright, Clear Images
With 4K UHD resolution and 500 nits of brightness, the CDEG3 Series delivers vivid, detailed images even in well-lit environments. Ideal for meeting rooms and public displays, it ensures content remains clear, engaging, and easy to read.

Built for a Lower Environmental Impact​
Designed with sustainability in mind, the CDEG3 Series is the first large format display to earn EPEAT Gold certification. Combined with ENERGY STAR compliance, it offers businesses, schools, and institutions an energy-efficient solution that reduces environmental impact while maintaining high performance.

Specifications

Display

LED backlightYes
Panel typeTFT
LED backlighting typeDirect-LED
TouchscreenNo
Active display area (W x H)1209.6 x 680.4 mm
Display technologyLCD
Display diagonal139.7 cm (55")
Display resolution3840 x 2160 pixels
Display brightness500 cd/m²
HD type4K Ultra HD
Response time6.5 ms
Contrast ratio (typical)5000:1
Viewing angle, horizontal178°
Viewing angle, vertical178°
Panel life50000 h
Native aspect ratio16:9
Anti-glare screenYes
Surface hardness3H
Native refresh rate60 Hz
Haze rate25%

Ports & interfaces

USB connector typeUSB Type-A, USB Type-C
DisplayPort version1.2
USB portYes
HDMI version2.1
PC Audio outYes
PC Audio inYes
DisplayPorts quantity0
Digital audio optical out1
Ethernet LANYes
HDMI ports quantity3
DVI portNo
VGA (D-Sub) input ports1
Ethernet LAN (RJ-45) ports1
RS-232 interfaceYes
USB version2.0
USB ports quantity3
HDMI input ports quantity3
USB Type-C DisplayPort Alternate ModeYes
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Audio

Number of built-in speakers2
RMS rated power20 W
Built-in speaker(s)Yes

Design

Product designDigital signage flat panel
Placement supportedIndoor
OrientationHorizontal/Vertical
Bezel width (top)1.59 cm
Bezel width (side)1.59 cm
Bezel width (bottom)1.59 cm
Product colourBlack
Panel mounting interface400 x 400 mm
VESA mountingYes
Screen shapeFlat

Performance

PurposeCommercial
Operating hours (hours/days)24/7
HDCPYes
HDCP version1.4/2.2

Power

Power consumption (typical)75.9 W
AC input voltage100 - 240 V
Energy efficiency class (SDR)F

Weight & dimensions

Weight16.7 kg
Display width1245 mm
Display depth78.6 mm
Display height715 mm
Display weight14.3 kg

Operational conditions

Operating temperature (T-T)0 - 40 °C
Operating relative humidity (H-H)20 - 80%

Technical details

Sustainability certificatesENERGY STAR, EPEAT Gold, ErP
Compliance certificatesCB, CE, EAC, Federal Communications Commission (FCC), RCM, REACH, RoHS, WEEE, cTUVus

Manuals & downloads

Delivery & returns

Delivery

  • FREE standard delivery on orders over £50, otherwise £4.95 (3–5 working days).
  • Express delivery £9.99 (1–3 working days) on selected products, UK mainland.
  • PlayStation and Arozzi products use a 5–7 working-day service.
  • Orders are processed within 24 hours, Monday to Friday excluding bank holidays. All deliveries must be signed for.

Returns

  • Changed your mind? Tell us within 14 days of receiving your item, then return it within a further 14 days, unused and in its original packaging. A minimum £9.99 collection fee applies.
  • Faulty or damaged on arrival? Contact us within 48 hours of delivery.
  • Custom-built PCs can only be returned if faulty. Opened headphones, earphones and AirPods can't be returned for hygiene reasons.

Full delivery information · Full returns policy