| 摘要 |
An electrical device including a support made out of an electrically-insulating material, at least one battery, at least one electrical component, and electrical conductors that connect the battery to the electrical component. The support is configured to be fastened under an item that can be handled by a user, or forming part of the item. The electrical conductors include at least one electrical conductor fastened mechanically to the support, the electrical conductor being possibly configured to be subjected to movement relative to the battery or to another conductor in response to thrust exerted vertically on the device, causing the electrical component to be automatically powered electrically when the item is picked up off a surface on which it was standing, causing the component to automatically cease to be powered electrically when the item is put back on the surface.
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