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Custom Turnkey HMI Solutions

Complete Turnkey HMI Solutions from Design to Assembly

CSI Keyboards designs and manufactures custom turnkey Human-Machine Interface (HMI) solutions that combine multiple interface technologies into complete, ready-to-install assemblies. With decades of experience in custom keypad manufacturing and electronic integration, we provide comprehensive solutions that simplify product development, streamline assembly, and deliver reliable performance.

Our turnkey HMI capabilities include membrane switches, silicone rubber keypads, capacitive and resistive touch screens, graphic overlays, flexible circuits, electronic components, displays, and custom enclosures. By integrating these technologies into a single, application-specific assembly, we help customers reduce component complexity, improve manufacturing efficiency, and achieve seamless functionality.

From initial concept and engineering support through prototyping, manufacturing, and final assembly, CSI Keyboards serves as a single-source partner for custom interface solutions. Our integrated approach helps OEMs bring products to market efficiently while maintaining control over quality, design requirements, and overall system performance.

Advantages of a Turnkey HMI Assembly

A fully integrated HMI assembly offers significant advantages over sourcing and assembling individual interface components from multiple suppliers. By combining engineering, manufacturing, and assembly services into a coordinated solution, CSI Keyboards helps customers simplify production and improve overall efficiency.

Key Benefits

  • Single-Source Manufacturing: Consolidate multiple interface components into one complete assembly from a single supplier.
  • Reduced Assembly Time: Receive integrated, ready-to-install interfaces that minimize internal assembly operations and production complexity.
  • Simplified Supply Chain: Reduce the number of vendors, purchase orders, and individual components that must be managed.
  • Custom Engineering & Integration: Combine keypads, touch screens, displays, electronics, and enclosures into a solution tailored to your application.
  • Improved Quality Control: Coordinated manufacturing and assembly processes help maintain consistency, fit, and functional performance.
  • Cost & Time Efficiency: Streamlined sourcing, assembly, and integration can reduce overall production costs and shorten manufacturing lead times.

Medical Diagnostics Interface Assembly

The Medical Diagnostics interface was created for rapid and real-time influenza 
detection. Both its mechanical and electrical design and assembly are tested to
meet medical industry standards.

Characteristics:

  • Graphic overlay faceplate
  • G10 backer for rigidity
  • Silicone rubber keys with dome switches
  • Display with capacitive touch screen
  • Copper flex circuit assembly loaded with electronics
  • Metal backer for mounting
  • Flex tails exit rear of assembly for connection

Medical Keypad Interface Assembly

Characteristics:

  • Graphic Overlay
    • Window for Display
    • Window for Light Bar
    • Red Transparent Window for IR Sensor
  • Printed Circuit Board Assembly:
    • TFT Display adhered to rear of PCB
    • IR Sensor mounted to rear of PCB
    • Buzzer mounted to rear of PCB
    • RGB LEDs
    • Light Guide Film 
    • Dome Switches

Some Typical Features of an HMI Assembly

  • Value-Added Membrane Switch Panel and Turnkey User Interface
  • Fully Loaded PCBs (printed circuit boards)
  • Integrated Touch Screens
  • Integrated Displays
  • Optical bonding and adhesive bonding for touch screen + display solutions
  • G10 Backers
  • Metal Backers
  • Flexible Circuits
  • Enclosures and Housings
  • Bezel Integration and Assembly
  • Connectors
  • Cable Assemblies
  • EMI / ESD / RFI Shielding
  • Barcode scanners