EAO AG is a Swiss, family-owned company founded in 1947, with headquarters in Olten, Switzerland. It is a global leader in the design and manufacture of high-quality industrial switches, complete custom HMI (Human-Machine Interface) panels and interface systems, and specialised automotive switch systems. The company's product portfolio includes pushbuttons, keylock switches, emergency stop switches, membrane switches, and capacitive touch sensors, organised into series such as the Series 56, Series 61, and Series 84. EAO serves a wide range of industries including transportation, industrial automation, medical technology, and building automation. With over 600 employees, EAO operates production sites in Switzerland, Germany, North America, and China, supported by ten wholly owned sales subsidiaries and distributors in more than 50 countries. The company is renowned for its engineering excellence, robust Swiss quality, and customisable solutions that meet stringent international standards. EAO holds a strong market position as a preferred supplier of HMI components, particularly for demanding applications in railway, bus, and machinery. Its switches are known for durability, reliability, and innovative design, often featuring IP67-rated sealing and advanced LED illumination. Through continuous innovation and global presence, EAO guarantees availability and technical support around the clock, upholding its promise of 'opening doors since 1947'.