| 摘要 |
Telephone instrument (1) arranged in a premises (2) including a microphone (3) having high sensitivity with respect to pressure waves and including analysis means (6), linked to the said microphone (3) and able to detect, in the signal generated by the said microphone (3), an abnormal event in the said premises (2) and to trigger sending of an alarm signal, capable of being transmitted on the telephone network (12). Application to remote signalling of an intrusion. <IMAGE>
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