To provide an electronic key, reducing influence of driving voltage waveform noise of a loaded display means by a simple method.
This electronic key includes: a transmit/receive means 5 capable of mutually radio communicating with a controlled object (a vehicle) A having a locked and unlocked door; a display means 6 for displaying various kinds of information pieces; and a control means 3 for controlling the transmit/receive means 5 and the display means 6, wherein a lock/unlock control signal for controlling locking and unlocking of the door can be transmitted from at least the transmit/receive means 5. The control means 3 causes pause or extinction of the display means 6 during a period of transmitting the lock/unlock control signal from the transmit/receive means 5 or receiving various signals from the controlled object.
KOBAYASHI NOBUAKI
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