| 摘要 |
The invention concerns warning or monitoring device for itinerant persons in the form of a housing comprising a GSM transceiver, optionally including several SIM cards. The device further comprises a means for recording and erasing voice messages connected to the transceiver, messages communicating the address visited by the person, and on the housing means controlling transmission of said pre-recorded message(s) and prompt messages addressed to one or several predetermined GSM network subscribers. The control means may also include a remote control. The device further comprises a read-only voice message generator reproducing the prompt messages addressed to said subscribers. A microphone and a speaker are provided for direct interaction between the user and said subscriber, a second sensitive microphone enabling the subscriber to listen to ambient noise and a micro-computer connected to and controlling the various elements mentioned above. |
