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Item#: 1GX-0007-00004

Sharp's PN-U423 42" Professional Edge Lit LED Backlight Digital Signage Display

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  • 42" Screen Size
  • HD (1920 x 1080) LED Display
  • 500 cd/m2 Brightness
  • 4,000:1 Contrast Ratio
  • Built-in 10W Audio System
  • Landscape and Portrait Mode
  • Engineered for 24/7 Use

  • Overview
  • Specifications
  • Warranty & Returns
  • Reviews
Around-the-Clock Communicators with Streamlined Style, Versatile Installation
Sharp's PN-U423 42" Professional Edge Lit LED Backlight Digital Signage Display

Sharp’s lineup has expanded to include PN-U553/U473/U423 – three professional LED displays that clearly have what it takes to get your message across. Designed for maximum impact, built for 24/7 durability, and sized for flexible installation, these 55" (54.7" diagonal) , 47" (47" diagonal), and 42" (42" diagonal)-inch displays represent a dynamic new breed of indoor digital signage solutions. Thin and lightweight enough to ensure an easy fit in stores, offices, and public spaces, PN-U553/U473/U423 displays boast the outstanding image quality needed to deliver truly compelling signage.

Excellent Image Quality

A brightness of 700cd/m² (PN-U553/U473) or 500cd/m² (PN-U423) supports these LED displays in their digital signage duties. And PN-U553/U473/U423 displays boast 1,920 (H) x 1,080 (V)-pixel full-HD resolution to help ensure that none of the detail or visual impact is lost. Thanks to full-HD resolution, everything from fine text to intricate graphics is stunningly crisp and clear.

Thin, Lightweight Design

PN-U553/U473/U423 displays owe their exceptionally thin profiles to edge-lit LED backlighting, where LED elements are located at the edges of the panel. Streamlined for a pleasing appearance and minimal protruding parts, these displays measure just over 2 inches at their thickest point and weigh only about 35 - 55 lbs, making for easy and flexible placement in offices, public spaces, stores, and other commercial establishments. The stylishly thin profiles also enable attractive wall mounting.

Energy Efficiency

Edge-Lit LED Backlighting on PN-U553/U473/U423 displays helps ensure reliable performance with low power consumption. In fact, PN-U553/U473/423 displays consume significantly less energy than conventional CCFL-backlight displays.

Reliability & Durability

24/7 Operation

Built solid, PN-U553/U473/U423 displays are ideal for use in demanding professional applications that may require around-the-clock operation seven days a week.

Power on Delay

The Power on Delay function allows a time delay between the startup of each display in multi-panel installations. This reduces the load placed on the power supply when a number of displays are turned on at the same time.

Fanless Architecture

Fanless architecture maintains airfiow and dissipates heat without the use of mechanical air-ventilation fans, which can attract dust and create noise. This fanless design also simplifies display maintenance.

Built-In Temperature Sensor

Should the temperature inside a display rise, a built-in sensor will detect it, and the monitor will automatically lower the brightness level of its backlight system.

Image Functions

Mirror Display Mode (Daisy Chain)*

With Mirror Display mode, the same image can be displayed on a daisy chain of PN-U553/U473/U423 monitors to create a powerful impact of visual repetition.
*Via a DVI-D connection.


Enlarge (Zoom) Display Mode

Multiple monitors can be grouped together to display one enlarged image, thanks to Enlarge (Zoom) Display mode, which corrects the framing of that image to eliminate misalignment between monitors.

User-Friendly Design

Choice of Installation Mode

PN-U553/U473/U423 displays offer a choice of landscape or portrait installation, allowing customers to select the mode that best suits their display content and application. While portrait installation offers the look and impact of a poster, landscape installation puts wide images on vivid display.

Built-In Speakers

Ideal for conveying audio information and playing location-appropriate background music, PN-U553/U473/U423 displays feature built-in 10W + 10W rear speakers that eliminate the need for external speakers and ensure a stylishly streamlined profile.

Expanded Connectivity

A comprehensive range of input/output terminals, including the DisplayPort™ interface, comes as standard on PN-U553/U473/U423 displays to give customers a variety of connection possibilities.

Display Management

ID Setting

Thanks to an RS-232C interface, PN-U553/U473/U423 displays* can be easily controlled and monitored from a central location via a PC. Each monitor can be assigned an individual ID code to specify when remotely turning that unit on or off, changing its input, or making various screen adjustments and settings.
*PN-U553/U473/U423 monitors can be connected together in a daisy chain configuration.


Learn more about the Sharp PN-U423




Screen Size
Native Resolution
1920 x 1080
500 cd/m2
Display Colors
1.06 Billion Colors
Contrast Ratio (Typical)
Viewing Angle
178°(H) / 178°(V)
Pixel Pitch
0.485 mm H x 0.485 V mm
Response Time


DVI Port
DVI-D 24-pin (HDCP compatible) x 1
Component BNC (Y, Cb/Pb, Cr/Pr) x 1
Ethernet Port
Other Ports
PC/AV Video Input

Video BNC* x 1

*The component video BNC Y signal and video BNC share the same terminal

PC/AV Audio Input

3.5 mm mini stereo jack x 1

RCA pin (L/R) x 1

PC Input

DisplayPort x 1

Mini D-sub 15 pin x 1

PC Output

Audio Line Output

RCA pin (L/R) x 1

Serial (RS-232C)

D-sub 9-pin input x 1

D-sub 9-pin output x 1

Dimensions & Weight

Dimensions without Stand
38.31" x 2.25" x 22.25"
Weight without Stand
35.3 lbs.


42" Class (42" diagonal) Screen Size - combined with TFT LCD technology helps create brilliant color images with maximum size and impact.

Edge Lit LED Backlight - reduces power consumption and helps enhance reliability and legibility of text.

Brilliant, HD Screen Images for Digital Signage - for use in public areas such as trade show exhibit halls, hotel lobbies and conference areas, airport corridors and retail locations.

Engineered for 24/7 Commercial Use - provides the reliability and durability you need for virtually any business.

Full 1920 x 1080 (1080p) Resolution - from analog RGB, digital RGB and HDTV video sources.

High Brightness (500 cd/m2) and Contrast Ratio (4,000:1)

Slim Design with Cabinet Depth of only 2-1/4"

3-Year On-Site Limited Warranty - covers parts, labor and backlight, in both landscape and portrait modes.

Built-in 10 Watt per Channel Stereo Speakers - eliminates need for an external audio system for many installations.

Optional Media Player PC - easily attaches to rear of display. Permits all-in-one digital signage display package.
Warranty, Returns, And Additional Information
  • Warranty
  • Limited Warranty period (parts): 1 year
  • Limited Warranty period (labor): 1 year
  • Read full details
  • Return Policies
    • Return for refund within: 30 days
    • Return for replacement within: 30 days
  • This item is covered by's Standard Return Policy.
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