| 摘要 |
An alarm clock including clock having a control circuit with a solenoid switch, and a rack having an upright post with a magnet, wherein when the alarm circuit of the clock is ringing, the battery lid and the alarm button of the clock are locked if the clock is not put in the rack; when the lock is put in the rack as the alarm circuit of the clock is ringing, a solenoid switch is induced by a magnet in the rack to unlock the battery lid and the alarm button, for permitting the user to turn off the alarm.
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