SDM-300 Dash Display

PLEX SDM-300 Dash Display


Entry-Level, Motorsport Quality 4.3” Display 
fully configurable | smart features | compact size

SDM-300® is the most affordable, motorsport quality dash display in its size range. It houses a vidid high-brightness 4.3” TFT display which together with the QuickGlance™ UI ensures best viewing ergonomics along with minimal driver distraction. Comes with fully configurable custom CAN BUS, 20 preloaded Smart Alarms, Auto-display Page Changing, a permanent Engine Log, 1-Click Max. / Min. values function & the capacity to display up to 256 different ECU channels.

status: discontinued | Replaced by: SDM-330

Key Features

4.3'' High-Brighness TFT Display

With luminance of 1,000 cd/m2 the 480 x 272 display is easily readable in all light conditions and different viewing angles.

Smart Alarms / Warnings

Easy to setup pre-loaded alarms with history of
the last 100 kept in memory with time, duration & value

Permanent Engine Log

Continuous Engine Log function that runs on the background and which keeps Min. & Max. values of key engine parameters in histograms

QuickGlance™ UI

Configurable 3-level colour coding  & optimum contrast settings minimize driver distraction & convey engine status with just a quick glance

Fully Configurable

Fast CAN BUS receive & transmit config., custom page layouts & multi-use inputs let you arrange SDM-300 according to your own terms

Dashboard Friendly Installation

Uniquely shallow total installation depth of just 19mm and no protruding wires or connectors, make the display very easy to mount

Automatic Page Changing

Hands-free display page changing based on user-defined conditions like engine status/load to help you keep your attention focused.

Up to 256 ECU Channels

Depending on your ECUs capacity  view up to 256 different channels/parameters including ECU status and error flags

4 Different Display Colour Themes

Selectable colour themes for different needs/occasions, such as Daylight, Colour Bblind, OEM style and Best Viewing Ergonomics
After-Market ECU Compatibility
Stock ECU Compatibility
SDM Displays Stock ECU ListMore protocols to be added soon
After-Market ECU Compatibility
Stock ECU Compatibility
Product Videos
Product Hardware Details
Product Hardware Details
4.3” High-Brightness TFT Display

With luminance of 1,000 cd/m2  the 480 x 272 display looks very vivid and is easily readable in all light conditions and from various viewing angles. Enhanced by our QuickGlance™ UI, the display comes across as being larger than it actually is and stands out due to its unique clarity.

Ultra-fast Display Refresh Rate

20Hz display refresh rate ensures a smooth, real-time-feel visual experience and lets you view exactly what is happening, the moment it is happening, with no delay in between

Auto-Dimming Function

A sensitive light sensor at the front enables adaptive display dimming to suit the light conditions and makes viewing better both in direct sunlight and low light conditions

Ultra Bright LED Lights

7 auto-dimmable shift LED lights with configurable set point per gear as well as step distance per rpm (e.g. every 100rpm) ensure optimised gear changing.

QuckGlance™ UI For Best Viewing Ergonomics

Smart Colour Coding
Configurable 3-level parameter colour-coding minimises distraction and communicates engine status easily with just a quick glance. How does it work? The user defines the low (BLUE), normal (GREEN) and high (RED) thresholds for each displayed channel and the SDM-300® colours it accordingly once the values hit that range. Your peripheral vision will then let you know almost instinctively when something is out-of-place and if it requires your extra attention.

Optimum Contrast, Saturation and Fonts
Instead of trying to impress with fancy realistic graphics, overly contrasted display items and ineffective fonts, we chose to implement the most effective combination of font type / size, colour palette and contrast levels that is derived from aviation dashboard design and colour theory studies. Priority is placed in having effective display items that require the minimum driver attention and achieve a “magnifying” effect making the SDM-300® come across as larger than just 4.3”.

Values below "NORMAL" range
Values within "NORMAL" range
Values above "NORMAL" range
Auto Display Page Changing

The Auto Display Page Changing function allows you to keep your hands on the wheel and your focus on the track without having to manually switch among different pages. You only have to decide on the conditions and the parameters for 4 different display pages: “WARM-UP”, “RACE”, “ERROR” and “NORMAL” and once the thresholds are reached the SDM-300® will automatically switch to the respective page.

Multiple Display Page Layouts

More than 10 different display page layouts to choose from, plus Pop-up displays, diagnostic overview, setup and statistics pages. All designed to offer best possible viewing ergonomics. Users can select to install the same layout many times but with different channels and name them accordingly.

Selectable colour themes


Our recommended theme for optimum viewing ergonomics based on recent studies


Theme for colour blind drivers who cannot easily distinguish green and red


Amber colour theme for blending the display better with OEM dashboards


White background theme usually preferred for day or open air use

View up to 256 ECU Channels

Depending on your ECU’s capacity and the connected sensors, the SDM-300® can display up to 256 different channels among which are ECU status and error flags. Always be in the know of what’s going on inside your engine.

Min. & Max. Values with Just 1-Click

Easily view the minimum or maximum values of every displayed parameter by clicking on the side Jog Dial and then decide whether to maintain the value in memory or dismiss it and start counting again

Permanent Engine Log

Continuous Engine Log function that runs on the background and which keeps an independent log with max. values and histrograms for key engine parameters such as RPM, MAP, ECT, OILT, FUELT and the min. BATV.

Preloaded Smart Alarms

20 pre-loaded Smart Alarms which only require that you input their trigger value reduce set-up time by more than 80%. Alarms will then appear superimposed in high contrast over the display page according to set priorities. A history of the last 100 alarms including their date, value and duration will be  stored for later retrieval on the PC SW.

PLEX SDM-300 Dash Display

Uniquely shallow total installation depth of just 19mm makes the the SDM-300® suitable also for OEM dashboards. Without any protruding wires and connectors from the back side, installation is quick and requires minimum effort.

On-the-Fly Configuration & Control

Control your SDM-300® easily on-the-fly via the side Jog-Dial and Back-Buton which are used for device configuration, menu browsing/page changing and viewing the Engine Log. The side keys let you easily configure the alarms, themes, OBD setup, LED lights and most other available parameters.

PLEX SDM-300 Dash Display

8 user-defined math channels allow custom parameters to be calculated in real-time. Examples: break bias calculation, long-button hold detection, accumulated condition active time, and more.

Custom CAN BUS

Fully programmable CAN BUS for message receive lets you configure the display to collect information for almost any CAN Bus ECU or other device on the market. Configurable message transmit lets you control other devices such as PDMs or translate message to a different format as required.


Now Included:

  • 2x Multipurpose Inputs
  • 2x Aux. Outputs
Fast & Intuitive PC Software

When setting-up a display for a project, the single most important attribute for tuners/race engineers is the required time. Our revised PLEX Device Manager® SW, provides the fastest and most intuitive configuration experience by reducing set-up time by up to 70%. You can now spend more time in tuning and testing than in customising and configuring the displays for your customers.

Download SW
SDM Displays Comparison Chart
Design & PriceuSDM-100uSDM-102SDM-300SDM-500SDM-550SDM-700
Price ex. VAT€399€469€799 - €864€1.099 - €1.299€1.599€2.299
Dimensions in mm (w/h/d)77/47/1277/47/12123/90/19123/90/19145/95/16200/129/27-47
MaterialCNC Alum.CNC Alum.CNC Alum.CNC Alum.CNC Alum.CNC Alum.
RBG LED Lights11991616
Connectoroptionaloptional16 pin / flat mount22 pin flat mount26 pin / sealed37 pin / sealed
Multi-purpose Inputs-4x AN/DI/FRoptional (2)2x AN/DI/FR10x AN/DI/FR8x AN/DI/FR
Thermocouple Inputs-2-22
Aux Outputs--optional (2)2 LS2 LS2HS & 2LS
Wiring Loomyesyesyesyesoptionaloptional
Control Interface /Joystick--optionalyesoptionaloptional
CAN BUS111222
LIN BUS---111
Internal Sensors
GPS---20Hz25Hz GNSS50Hz
Light Sensoryesyesyesyesyesyes
Real-time Clockyesyesyesyesyesyes
Device TEMP Sensoryesyesyesyesyesyes
User Interface
# of Pagesup to 16up to 16up to 24up to 24up to 48up to 48
# of Display Parametersup to 128up to 128up to 256up to 256up to 512up to 512
Custom Pagesyesyesyesyesyesyes
Custom Page Design--yesyesyesyes
Colour Themes--yesyesyesyes
Logging Rate / Channel-20Hz-100Hz / variable100Hz / variable500Hz / variable
# Logged Channels-64-256512512
Engine Logyesyesyesyesyesyes
Alarms Logyesyesyesyesyesyes
Lap Timing---yesyesyes
Acceleration Performance---yesyesyes
Engine Power & Torque---yesyesyes
Math Channels-4881616
Custom Flagsyesyesyesyesyesyes
Trip Meter (dist./time/avg. speed)yesyesyesyesyesyes
Product Versions
  • SDM-300 Basic (now with I/Os)
Technical Spec
  • Operating Voltage: 6 – 18V DC
  • Operating Temp: -10 to +60 deg C
  • Dimensions: w 123mm, h 90mm, d 19mm
  • Weight: 270g
What’s in the Box
  • Display
  • Wiring Loom
  • Mounting Screws
  • 3M Velcro Tape


Entry-Level, Motorsport Quality 4.3” Display 
fully configurable | smart features | compact size
status: discontinued | Replaced by: SDM-330

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