DETECTOR, TRANSMITTER OF POSTAL OR ADVERTISING OBJECT INSERTION, IN A CLOSED PLACE OF STYLE LETTER BOX, OPERATING WITH AND WIRELESS, CONNECTING TO A MONITORING RECEIVER HOUSING.

摘要

The device has a detector (2) and a transmitter (3) fixed at the inner top and the inner bottom of a letter box (4), respectively. Five infra-red LEDs (10) are provided at the top and bottom of the letter box, where a wireless transmitter card (9) sends information about the presence of a mail to a receiver inside a home when the mail is inserted into a mail insertion opening (1) of the letter box. The receiver includes a green LED for indicating the powering of the receiver, a yellow LED for indicating the presence of mail, and a red LED for indicating low battery of the receiver.