| 摘要 |
A remote-control key (1) for use in a remote-control system is provided with a transmission circuit (4) in a key grip (3) and used for transmitting an atmospheric propagation signal as an locking or unlocking signal containing an ID code. When the key (1) is inserted into an IG key cylinder and detected by an IG key position switch (8), a control unit (7) on the automobile side is adapted to accepting the atmospheric propagation signal received via an antenna (7a) for a predetermined period, verifying the ID code, outputting a signal for effecting an engine-starting operation when the key is proper, and permitting an engine being started. It is thus prevented to start the engine unlawfully with a mechanically-copied key. |
