The core busines of the company is the production and sale of components, equipment and automation systems. In the consumer and medical market, it is known for medical equipment such as digital thermometers, blood pressure monitors and nebulizers. The company invented Omron rings to protect banknotes from counterfeiting and was one of the first manufacturers of ATMs.

Business departments and products are industrial automation solutions, specifically industrial robots, sensors, control elements, power supplies and PLC controllers. Electronic components such as relays, switches, connectors, micro-sensors, MEMS sensors and other sectors of activity such as social systems or power distribution and control for oil rigs.