Alarm system automatically alerting given telephone subscriber - with call number supplied to line upon detector actuation

摘要

The alarm system is linked to the telephone network, so that a given subscriber, eg the police station or fire station, can be alerted automatically upon actuation of at least one detector of the alarm system. Electronic means (N) supply the subscriber call number for the telephone line, with additional electromechanical means supplying signals to the line corresponding to this number in response to the detector actuation. Pref. the electronic means includes a rectangular clock pulse generator (M) and a counter-decoder (7, 8).