EAO AG is a Swiss manufacturer and engineering developer of Human Machine Interface (HMI) components and complete system solutions, founded in 1947 and headquartered in Olten. Operating worldwide with production facilities in Switzerland, Germany, North America, and China, the group employs over 600 staff and is certified to ISO 9001, ISO 14001, and IRIS (rail industry) quality standards.
Beyond manufacturing switches and pushbuttons, EAO develops complete customized HMI control panels and integrated interface solutions, assisting customers from initial UX/UI design and ergonomics modeling through embedded software, electronics integration, prototype manufacturing, and full-scale industrial series assembly.