Human-Machine Interface Solutions

With more than 25 years experience designing, qualifying and producing Keyboards, Illuminated Panels, Integrated Switch Panels, and Audio Control Panels, Bowmar offers custom solutions for the Aerospace and Defense industries.

Our thorough understanding of the technical requirements for these demanding applications enables us to provide prompt, strong engineering support during the development phase of your new product. We welcome customers preliminary list of requirements and are eager to collaborate with you to develop the final specification.

Bowmar will help you ensure that the final design optimizes functionality, manufacturability, and cost.

Bowmar’s customers have the advantage of being able to choose and specify panels of varying configurations and complexity. We do the heavy lifting while you stay focused on your core competencies to maximize your engineering, procurement, and manufacturing resources. The following graphic illustrates the range of customization and panel product configurations offered by Bowmar.


  • Illuminated Panel and Keyboard Legends
    • Compliance with MIL-DTL-7788 and NVIS (Night Vision Imaging System) MIL-STD-3009.
    • Lighting options – LED, incandescent, and electroluminescent
  • Panel Envelope
    • Design for DZUS rail compatibility and MS25212 compliance
    • Thin profile and light weight design
  • Integral Momentary Push Button Switches
    • Lighted, sealed, low profile, positive tactile feel
  • Split Legend Lighting
    • A combination of backlit legends, annunciated legends, and indicators can be incorporated into a single push button switch
  • Panel and Switch Annunciator Options
    • Legend/Character
    • Indicators
    • Dead front, when off in high ambient light conditions
    • Sunlight readable, when on in high ambient light conditions
    • NVIS compatible and compliant
    • Lighting methods – LED and incandescent
  • Custom or Standard
    • Multi-feature potentiometers, rotary switches, encoders, toggle switches, pull switches, and push-to-talk switches
    • Features: stops, detents, absolute/relative encoders, continuous turn, momentary push switch, illuminated knobs
  • On-Board Electronics
    • PWM (Pulse Width Modulation) for LED Dimming Control
    • PLD (Programmable Logic Device) and A to D conversion for matching LED dimming to incandescent dimming
    • Power Regulation – voltage conversion and filtering
    • Communications Protocol – including RS-232, RS-422 and /or customer defined Design to meet the Environmental and EMI requirements of fixed wing and rotary wing aircraft; including MIL-STD-810, MIL-STD-461, and RTCA/DO-160
  • Testing Capabilities
    • Photometric: luminance, contrast, chromaticity, uniformity
    • NVIS: On-site spectroradiometer for full NVIS compliant testing
    • First Article and Qualification testing: Bowmar has the ability to create First Article and Qualification test procedures, perform the tests, and submit comprehensive test reports.
  • Quality System AS9100 and ISO 9001 certified
  • Customer Driven
    • From simple. To complex multi-function solutions, including on-board intelligence, Bowmar esigns and manufactures the exact Human-Machine Interface solution for your demanding requirements.