Grayhill develops user interface devices and control components for vehicles and mobile machinery where reliability, ergonomics, and precise control are critical. The solutions are designed for seamless communication via CAN bus (J1939 and CANopen) and easy integration with onboard vehicle control systems.
With a strong focus on both functionality and user experience, Grayhill designs components that improve operator efficiency, reduce fatigue, and simplify installation for original equipment manufacturers (OEMs). The products are built for harsh environments and withstand vibration, dirt, moisture, and exposure to chemicals.
Grayhill offers both standard products and custom-engineered solutions, enabling fast development from prototype to full-scale production.



In medical technology applications, precision, hygiene and reliability are crucial. With a deep understanding of how doctors, nurses, and technicians interact with medical equipment, Grayhill focuses on providing clear tactile and audible feedback, enabling confident and intuitive operation in critical situations.
The products are designed with sealed, smooth, and easy-to-clean surfaces, minimizing crevices where bacteria can grow. Carefully selected materials withstand frequent cleaning and exposure to harsh disinfectants commonly used in healthcare environments.
Grayhill offers both standard components and custom-engineered HMI solutions, ranging from individual input devices to fully integrated control panels—designed to meet stringent requirements for safety, cleanliness, and usability.



Grayhill develops and manufactures rugged, operator-centric human-machine interface (HMI) components for military and defense applications, where reliability, precision, and situational control are critical. With over 80 years of experience, Grayhill is AS9100 Rev D certified, ITAR compliant, and designs products that meet MIL‑STD-810, MIL‑STD-461, and MIL‑STD-3009 standards.
Human-in-the-Loop for AI and Autonomous Systems
As AI and autonomous technologies reshape defense operations, the human operator remains essential—especially in mission-critical applications where control, oversight, and safety cannot be compromised. Grayhill applies Human-in-the-Loop (HITL) principles to its HMI components, ensuring operators maintain engagement, situational awareness, and accountability even in AI-enabled or semi-autonomous systems.
Grayhill’s HITL-focused interfaces combine robust hardware with intuitive, operator-friendly design, providing reliable control in high-stakes environments. From dismounted soldiers to vehicle-mounted systems, Grayhill delivers interfaces that balance autonomy with human judgment, ethical responsibility, and operational performance.



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