| 摘要 |
An alarm apparatus immediately alerts mail recipients of postal deliveries made through a mail slot opening. The device is mounted adjacent the mail slot and has an activation lever, the distal end of which is in contact with the hinged, swinging door of the mail slot, and the proximal end of which has a contact switch retention means. As the door is opened, the activation lever rotates causing the retention means to release the contact switch resulting in the completion of a circuit and the sounding of an alarm. The alarm may be a buzzer, beeper, radio or other suitable means of producing an audible alert which can be immediately detected. In another embodiment of the invention, completion of the circuit can activate a light for the hearing impaired. In still another embodiment of the invention, the subject device can be further adapted to trigger the activation of alarms at remote locations.
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