EM Devices Corporation



Development of the world's first twin relay

Twin relays are two relays cased on one cover. Until then, the direction of the current such as positive turn and reversal of the actuator is reversed and used. The application required two relays. We are focused on this application, - Miniaturization and weight reduction Low cost Ease of implementation In 1988, we began developing and mass-producing twin relays for the first time in the world.

  • Miniaturization and weight reduction
  • Lowering cost
  • Easy implementation

We aimed for the above effectiveness. In 1988, we developed and started mass production of twin relays, in which two relay elements are packaged in one cover, for the first time in the world.

Half a century of experience and trust

Technology based on experience from relay design to mass production, which has continued for about half a century, will continue to meet the needs of our customers.

History of relay development and transition of miniaturization

  Miniature Power Relay

  Miniature Signal Relay