Automatic electronic paging system
作者： Dayne G Gardner , Michael I Keller
DOI:
关键词:
摘要: Disclosed herein is an automatic electronic paging system. Each subscriber identified by a unique identification code which selectively converted to supplemental upon entering area. The codes are within each area but not the overall A plurality of sensor units located area, having temporarily and stored therein corresponding one identifying signal, in form sent where it assigned code. transmitted all sensors with signal being generated at containing In response receipt can send acknowledgment pager.
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