Mitsubishi Electric’s Latest Large Screen Public Display Delivers Content Without The Cables


Mitsubishi Electric is pleased to announce the release of the MDT551S - a new slim-line 55-inch LCD monitor in its range of high performance digital signage displays.

Utilising a commercial grade LCD panel and featuring the latest display technology, the MDT551S delivers excellent image reproduction, superior connectivity and long term operation in commercial and public display applications.


The MDT551S has been engineered to provide advanced connectivity, catering for almost any type of input. A major addition to the display’s connection options is the inclusion of an Intel OPS compatible slot, which allows installation of any Intel OPS compliant hardware, such as a personal computer card module. The expansion slot can also be used to install Mitsubishi Electric’s innovative CAT-5 transmitter/receiver pair*1, allowing both video and control signal data to be transmitted over the same network cable, or an SDI input card*2 for SD-SDI, HD-SDI and 3G-SDI support.


“Our new MDT551S display is a great choice for standalone public display installations where running cables or space for an input source is a problem.” said Matthew Hanna, Division Manager of Visual Information Systems, Mitsubishi Electric Australia. “By using a compliant PC card module with the display’s OPS slot, users have the ability to play video or run applications directly from the MDT551S, taking both cabling and source problems out of the equation.”


The MDT551S includes all the standard inputs such as VGA, DVI, Component and Composite. Using the HDMI and DisplayPort™ connections, high quality video and audio content can be transmitted over a single cable, and the MDT551S includes built-in speakers, for on-the-fly audio without the need to purchase additional components. The MDT551S also has a built-in 4 port USB hub, allowing multiple devices for a PC to be connected via the display (e.g touch screen overlay).


The MDT551S comes with twin ambient light sensors, located fore and aft of the display, which allow it to automatically and accurately adjust brightness to suit any environment. Colour matching is a key feature of the display, with 6-axis colour adjustment allowing users to adjust the hue and saturation of primary colours (R/G/B/C/M/Y) independently. The display also has a 120Hz refresh rate, providing smooth playback of fast-moving images.


The MDT551S also includes the standard features found with all Mitsubishi Electric commercial LCD displays, such as power and input scheduling, a screen saving function to prevent image retention, and PinP/PoutP modes. The MDT551S comes with a remote control with discrete input switching.


*1 Mitsubishi Electric Transmitter Card model number: DP-2CA5-T. Receiver model number: DP-2CA5-R

*2 Mitsubishi SDI Card model number: DP-1SDI-3G

Mitsubishi Electric MDT551S 55" Slim Bezel Public Display

Mitsubishi Electric MDT551S 55" Slim Bezel Public Display

Specification Overview

Model MDT551S
Display type 55" Widescreen LCD Display
Viewable Area 54.6" (138.8 cm) diagonal
Native (Maximum) Resolution 1920 x 1080 pixels
Aspect Ratio 16:9
Colour Depth 16.7 million colours
Contrast Ratio 1300:1 (typical)
Brightness 700 cd/m² (typical)
Response Time 10ms (Grey to Grey)
Viewing Angle (Horizontal, Vertical) +/-89°, +/-89°
Dot Pitch 0.630mm(H) x 0.630mm(V)
Input Terminals
PC 15 pin D-sub x 1; BNC (R,G,B,H,V) x 1; HDMI x 1; DVI-D x 1; DisplayPort x 1; USB (upstream) x 1
Video Component (BNC) x 1; Composite x 2 (BNC & RCA); S-Video x 1
CAT-5(Optional) Modular 8-pin x 1 for differential RGB video and    RS-485 control
Audio RCA L/R x 2; Stereo mini jack x 1, HDMI
Control Input 9 pin Mini D-sub (RS232C) x1; LAN (RJ-45) x 1
Output Terminals  
PC/Video/CAT-5(Optional) 15 pin D-sub x 1; Composite x 1, Modular 9-pin x 1; USB (downstream) x 4
Audio RCA L/R x 1, External Speaker connections
Control Output 9 pin Mini D-sub (RS232C)
Frequency Range
Horizontal Frequency 15.625/15.743, 31.5KHz – 91.1KHz (Analogue/Digital)
Vertical Frequency 50,58Hz - 85Hz (Analogue/Digital)
Video Compatibility
Video NTSC / PAL / SECAM / 4.43NTSC / PAL60
HDTV 480i, 480p, 576i, 576p, 720p, 1080i, 1080p
Physical Characteristics
Operating Voltage Single phase, 50/60Hz, 100VAC to 240VAC ±10%
Power Consumption 316W (293W without speakers)Less than 1W in standby mode (LAN Control OFF) Less than 5W in standby mode if using CAT-5 (LAN Control OFF)
Built-in Speakers 10W x 2
Dimensions (W x H x D) 1251mm x 721mm x 127mm
Weight 37.0kg
Temperature (Operating) 5°C ~ 40°C
Air Humidity (Operating) 20% - 80%

*Specifications are subject to change without notice

About Mitsubishi Electric Australia

With more than 30 years of experience in providing reliable, high-quality products to both corporate clients and general consumers, Mitsubishi Electric Australia is a recognised leader in the marketing and sales of electrical and electronic equipment used in information processing and communications, space development and satellite communications, consumer electronics, industrial technology, energy and transportation.

For more information about Mitsubishi Electric Australia visit

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For more information, please contact:
Simon Clark
Text 100 Public Relations
T: 02 9956 5733