240x128 Graphic display LCD engineered to quickly and easily add an elegant graphic HMI to any application. Multiple communication protocols such as Serial RS232, TTL, I2C, USB and RS422 communication models available.

The GLK240128-25 is a 240x128 Intelligent Graphic LCD display engineered to quickly and easily add an elegant graphic HMI to any application. Multiple communication protocols such as Serial RS232, TTL, I2C, USB and RS422 communication models allow the GLK240128-25 Graphic LCD to be connected to a wide variety of host controllers.

Our Graphic LCD provides you with a cost-effective industrial HMI user interface solution for that great product/project you are developing. On board memory for Fonts and Bitmaps! This graphic LCD displays graphics and text in any font, style, justification and language, all with the convenience of a 25-key keypad matrix will allow fast development for any application.

  • 240x128 Graphic display LCD HMI
  • Available Interfaces: Serial RS232, TTL, I2C, RS422 and USB
  • 25 key keypad matrix
  • 256KB of customizable fonts and bitmaps to enhance the graphical user experience
  • Programmable to display any language
  • 6 General Purpose Outputs
  • Two available voltage options: 5V, and Industrial 9-35V (12V, 24V)
  • Field upgradable firmware
  • Software controlled contrast and brightness with configurable time-out setting up to 90 minutes
  • Built in Horizontal or Vertical bar graphs
  • Extended temperature available for extreme environments of -20C to 70C
  • Hardware flow control
  • Fast and easy development
  • Designed, supported and Made in CANADA
  • Long life cycle
  • Backed by Matrix Orbital's decades of research and development.

Please note: This unit's PCB has been replaced by the improved version (rev 4.0). The unit’s physical footprint, protocols and display remain the same. However, we have made improvements to the product such as enhanced ESD protection. If you have ordered this display in the past, please contact support for further details to avoid compatibility issues.

A product change notice has been released for this display. Change effective Jan 30, 2015. Please review the PCN

Family/Series Intelligent Display
Module Width (mm) 144
Module Height (mm) 104
Display Type Graphic LCD
Backlight Type LED
Viewing Area Width (mm) 114
Viewing Area Height (mm) 64
Active Area Width (mm) 107.95
Active Area Height (mm) 57.55
Resolution Width (Pixels) 240
Resolution Height (Pixels) 128
Pixel Pitch Width (mm) 0.45
Pixel Pitch Height (mm) 0.45
Pixel Width (mm) 0.4
Pixel Height (mm) 0.4
Font Multilingual
Viewing Direction Top
Viewing Angle 60
Touchscreen None
Keys 25
Haptic Feedback None
Audio Feedback Piezo Buzzer
GPO's 6
Advanced GPO's None
DOW Optional, 1
Integrated LED's None
Graphic Memory 256kB
Interface RS232, TTL, I2C, RS422, USB
Command Protocol Matrix Orbital
Controller LPC1752
Negative Voltage Integrated
Backlight Driver Integrated
Minimum Voltage (Vdc) 5
Typical Voltage (Vdc) 5, 9-35
Maximum Voltage (Vdc) 35
Header Standard
Min. Operating Temp. (°C) 0, -20
Max. Operating Temp. (°C) 50, 60
Min. Storage Temp. (°C) -30, -10
Max. Storage Temp. (°C) 60, 80


  File Name Revision Size  
  File Name Revision Size  
GLK240128-25 Display  Manual for PCB revision 4.0 4.0 2.91MiB


Manual for PCB revision 4.0 of the GLK240128-25, GLK240128-25-422, and GLK240128-25-USB displays including the LPC17xx processor.

GLK240128-25 Display  Autocad Drawing for PCB Revision 4.0 4.0 145.24KiB


Autocad .dwg style drawing of the GLK240128-25, GLK240128-25-422, and GLK240128-25-USB displays.

GLK240128-25 Display  Autocad drawing for PCB revision 1.1 1.1 88.66KiB


Autocad .dwg style drawing for PCB revision 1.1 of the GLK240128-25 display.

GLK240128-25 Display  Manual for PCB revision 1.0 to 1.1 1.0 1.08MiB


Manual for PCB revision 1.0 to 1.1 of the GLK240128-25 display.

GLK240128-25  PCN 2015-10-13-01.1 229.1KiB


GLX G2.1 ARM Firmware Version 8.6.2 Release

GLK240128-25  PCN 2014-05-23.2 229.24KiB


GLX G2.1ARM Firmware Version 8.5 Release

GLK240128-25  PCN 2013-02-01.2 229.43KiB


GLT G2.1ARM v8.4 (PCB Rev 4.0) Release

GLK240128-25  PCN 2011-10-06-01.1 99.86KiB


GLT G2.1ARM Firmware Version 8.3 (PCB Rev 4.0) Release

GLK240128-25  PCN 2011-04-06-01 100.03KiB


GLT24064-XX / GLT24064-1U-XX / GLT240128-XX Firmware v8.2.0 Relase

GLK240128-25  PCN 2011-01-24-03 104.4KiB


GLT240128 / -USB / -422 Firmware v8.1.0 Release

GLK240128-25  PCN 2010-10-08-03 114.91KiB


GLT240128 PCB Rev 4.0 Release

GLK240128-25  PCN 2010-08-16-01 120.5KiB


New MO VPT module

GLK240128-25  PCN 2009-11-19-02 102.49KiB


-GW Model to change to -FGW

GLK240128-25  PCN 2009-03-25-01 103.33KiB


Firmware Update for C228

GLK240128-25  PCN 2008-11-26-01 100.16KiB


Font Spacing Change

GLK240128-25  PCN 2008-07-22-03 106.78KiB


Firmware Upgrade – Keypad Read Delay

GLK240128-25  PCN 2008-06-10-03 106.71KiB


Firmware Update – move to Atmega164P

GLK240128-25  PCN 2007-09-25-02 133.96KiB


All Displays – Backlight Life

GLK240128-25  PCN 2007-07-11-01 111.46KiB


G2 Alphanumerics / Graphics Upgraded FW

GLK240128-25  PCN 2007-02-20-02 106.21KiB


G2 Graphics

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  • Model: GLK240128-25
  • Availability: In Stock (Build to Order)
  • $195.95USD
  • 25 or more $190.07USD
  • 50 or more $186.15USD
  • 100 or more $176.36USD
  • 200 or more $175.04USD
  • 500+ : Contact us

Tags: GLK240128-25