OPTEX GROUP Co., Ltd. engages in the development, design, manufacture, and sale of sensors and similar systems. It operates through the following segments: Sensing Solution (SS), Factory Automation (FA) and Electronics Manufacturing Service (EMS). The SS segment develops and designs electronic parts and sensors for security devices, automatic doors, water quality measuring equipment, and traffic-related systems. The FA segment manufactures factory automation products. The EMS segment provides electronic equipment manufacturing service. The company was founded by Tatsuya Arimoto and Toru Kobayashi on May 25, 1979 and is headquartered in Otsu, Japan.