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NETWORKED MAIL DETECTION AND NOTIFICATION SYSTEM
NETWORKED MAIL DETECTION AND NOTIFICATION SYSTEM
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机译:网络邮件检测和通知系统
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摘要
A detection system for detecting mail in a mailbox is described. In one aspect, the detection system includes a base portion constructed of a clear medium. The base portion defines a relief element having a ledge. The base portion includes an optical emitter directed to emit light through the relief element and into the mailbox. The base portion also includes an optical detector oriented to detect light at the ledge.
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