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Authorized Supplier of Pro-Face Products - High-Tech Distributor Since 1987
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Pro-Face – Dedicated Operator Interfaces – ST40x Series |

Compact Programmable Operator Interfaces
Powerful Display in a Compact Body! The Pro-face brand ST403 Series of Compact Programmable Operator Interface is the industry's fastest terminal, powered by a 100 MHz RISC CPU for efficient, stress-free performance. The ST403 offers a QVGA touch screen that displays monochrome graphic objects and bitmap images clearly rendered in 8 tonal graduations. The ST Series has the answers - a powerful display in a compact body!
Compact terminal with QVGA touch screen
Monochrome graphic objects and bitmap images clearly rendered in 8 tonal graduations.
Amber and Red Backlight Color displays
The most readable color for the human eyes.
LED backlights are equipped.
No backlights replacement because of LED backlights.
Note: Replacement may be required depending on handling and environment.
The Industry's fastest compact terminal!
Powered by a 100MHz RISC CPU for efficient, stress-free performance!
Space-saving size!
The 3.8 in. display is our newest offer. Saves over 40% more space. A truly compact operation interface.
Function Keys are featured!
Actions can be set to each key, so 6 function keys gives the operator a bigger control panel than the actual display size.
| Product | Display/User Input | Connectivity/ Expansion | Features | Application |
![]() Pro-face ST403 Series HMI Operator Interface |
3.8" Full graphical HMI Amber and Red touch screen displays, LED backlit, 320x240 pixel resolution with six programmable function buttons on a per screen basis. | Includes one (1) Serial (RS-232C & RS-422) port and a Tool port for bar code reader input or D-Script. Now offers Ethernet Interface. | Upgrade text-based display panels or new designs where high graphic functionality is required at lowest cost. Supports recipes, time-base functions, security levels. | The Pro-face ST40x series small footprint and low cost is ideal for OEM packaging and machine applications. |
![]() Pro-face ST402 Series HMI Operator Interface |
3.8" Full graphical HMI Amber touch screen display, LED backlit, 320x240 pixel resolution with six programmable function buttons on a per screen basis. | Includes one (1) RS485 Siemens MPI port and a Tool port for bar code reader input or D-Script. | Upgrade text-based display panels or new designs where high graphic functionality is required at lowest cost. Supports recipes, time-base functions, security levels. | The Pro-face ST40x series small footprint and low cost is ideal for OEM packaging and machine applications. |
![]() Pro-face ST401 Series HMI Operator Interface - 24V |
3.8" Full graphical HMI Amber touch screen display, LED backlit, 320x240 pixel resolution with six programmable function buttons on a per screen basis. | Includes one (1) RS-232 serial port and a Tool port for bar code reader input or D-Script. | Upgrade text-based display panels or new designs where high graphic functionality is required at lowest cost. Supports recipes, time-base functions, security levels. | The Pro-face ST40x series small footprint and low cost is ideal for OEM packaging and machine applications. |
![]() Pro-face ST400 Series HMI Operator Interface |
3.8" Full graphical HMI Amber touch screen display, LED backlit, 320x240 pixel resolution with six programmable function buttons on a per screen basis. | Includes one (1) RS422 serial port and a Tool port for bar code reader input or D-Script. | Upgrade text-based display panels or new designs where high graphic functionality is required at lowest cost. Supports recipes, time-base functions, security levels. | The Pro-face ST40x series small footprint and low cost is ideal for OEM packaging and machine applications. |
Find Price and Availability on any Pro-Face ST403 parts by clicking on the Buy It Now button. If you cannot find what you are looking for, call our Customer Support team at 1-866-599-6523 or email at sales@cimtecautomation.com.




