La Grange, IL - Grayhill has many veterans with 35 years of experience at our company or more. Please join us in celebrating their anniversaries together!
La Grange, IL – Grayhill is pleased to announce Fusion Sourcing as new Grayhill Rep for select Northeast Territories.
La Grange, IL – Grayhill is pleased to announce Sematron as the new Distributor/Representative for UK and Ireland
La Grange, IL – Grayhill is pleased to announce Straube Associates as the new rep firm for Northern California, Nevada (Clark County Excluded), and Hawaii....
Grayhill is proud to be going back to the Moon again and onto Mars as a user interface supplier for the NASA Orion Spacecraft. Our team appreciated meeting...

Human Interface for Off-Highway Vehicles

Company Mission
To be instrumental to our customers’ success by delivering intuitive human interface solutions that help farmers feed the world and construction workers build a better world.

Market Focus
Grayhill understands the human interface requirements of farmers and construction workers. Because operators of off-highway vehicles spend long days in the driver’s seat, engineers at Grayhill look beyond basic functionality to improve operator efficiency and comfort.

Our products and solutions have been deployed on tractors, harvesters and sprayers in the agriculture industry. In construction, Grayhill provides the human interface on bulldozers, loaders, excavators, graders and paving equipment. In related fields, Grayhill's experience extends to material handling, skid steers, aerial platforms and cranes.

We specialize in creating user interface devices that communicate via CAN-bus (J1939 and CANopen protocol) to control on-board systems. A standard range of keypads, joystick/encoders and displays are offered as base products ready for quick, cost-effective customization. These products simplify mechanical installation into the vehicle cab and electrical integration with the vehicle’s control units.

Products and Solutions
Series 3K Can-bus Keypads come in five standard sizes that can be used in new designs or to replace rows of rocker switches. The Series 3J Vehicle Display Controller is an arm-rest mounted rotary encoder with integrated joystick and pushbuttons for intuitive control of on-screen software. Series 3D Vehicle Displays with embedded computers are capable of running many applications simultaneously, such as video systems or virtual gauges.


Starting with custom design services, Grayhill takes a proactive approach to help identify job specs. Our engineers look beyond basic functionality to improve operator efficiency and ergonomics. This approach yields more intuitive controls that reduce operator fatigue and increase productivity. They optimize product design to simplify installation into the vehicle cab which reduces the OEM’s assembly time. Further, these custom products are programmed for easy integration with the vehicle’s on-board control unit. 

Off-Highway Vehicle Custom Solution
Harvester Armrest mounted controls
Tractor A-Post mounted controls
Excavator Display interface
Snow Groomer Keypad
Loaders & Excavators Keypads
Garbage Truck Keypad
Control System  Display interface


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