| 摘要 |
A method of reminder via audio alert in which weight applied to a pressure sensitive switch arms but does not activate the sound device. The unit is plugged into the vehicle's pre-existing cigarette lighter socket which, when the ignition key is in the "accessory" or "on" position provides a 12 VDC flow of power into the unit. When the power provided by the vehicle's battery flows into the 12 VDC relay, power from the unit's lesser voltage batter is interrupted leaving the sound device dormant. When the ignition key is in the "off" position the vehicle ceases to provide the 12 VDC current into the relay which no longer interrupts the flow of current between the unit's lesser voltage battery and the sound device. Thus, when armed and the vehicle is on, the alert is dormant, when armed and the vehicle is off, the alert is active.
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