| 摘要 |
The present invention relates to a kind of switch for pre-listening the alarm bells of an alarm clock, wherein the said switch comprising spacer and control switch, and thereat the control switch is coupled at one end of the said spacer and extensible installed on the packing box and, primarily, the said spacer is inserted into the battery compartment of alarm clock at a position located in-between the electrode and the battery so as to separate the electrode from the battery, and hence cut off the power supplied to the said battery inside the battery compartment, and instead, the power supplied to battery is controlled by the said control switch installed at one end of the said spacer in such a way that it is allowable for someone to pre-listen the alarm bells as well as be realizable operating status of such alarm clock while pressing on the control switch on the packing box directly.
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