Kyosan Electric Manufacturing Co., Ltd. develops, manufactures, and sells electromechanical interlocking, road traffic signal equipment, and cuprous oxide rectifiers in Japan and internationally. It offers railway signal solutions, including train control and detection equipment, interlocking equipment, block systems, field equipment, level crossing protection equipment, total traffic control systems, maintenance equipment, power supply for signaling systems, and railway-related equipment. The company also provides safeguards for passenger transfer area; passenger information display devices; traffic management systems, such as road traffic control systems, road traffic signal controllers, road traffic signal units, traffic/pedestrian sensors, information displays, and other devices, as well as disaster prevention products. In addition, it offers power conversion systems comprising digitally controlled RF systems and DC converters; uninterruptible power supplies for signal; and power supplies for communications devices. The company was formerly known as Tokyo Denki Kogyo Co., Ltd. and changed its name to Kyosan Electric Manufacturing Co., Ltd. in 1926. Kyosan Electric Manufacturing Co., Ltd. was incorporated in 1917 and is headquartered in Yokohama, Japan.