| 摘要 |
A drop box for receiving mail pieces for collection and delivery by a postal service includes an enclosure having a slot sized for receiving mail pieces, a feeder positioned inside the drop box for engaging and conveying mail pieces inserted into the slot, a detector for detecting a potential contaminant inside the drop box, and a controller for initiating a preprogrammed action when a potential contaminant is detected inside the drop box. The preprogramed action may include locking the box and sounding an alarm coupled to the controller. The drop box may also be equipped with means for sterilizing the drop box and its contents such as a source of electromagnetic radiation and/or a source of a chemical sterilizing agent.
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