| 摘要 |
An alarm system the operation of which is controlled by a key switch and, if desired, by a seven-button decoder. Several abnormality detecting devices are connected to a computer dialer. The detecting devices may consist of a wide variety of sensors, three types of which are mentioned in this specification. Upon receipt of an alarm signal from a detecting device, some of the computer dialer circuitry interrogates that signal and, as a function of that signal, actuates the proper output circuitry of the computer dialer. The output circuitry specifically comprises a two-track tape playback and telephone dialing equipment for use with a commercial telephone system to deliver one or more prerecorded telephone warning messages to selected persons. The system cannot be jammed by incoming calls. An alarm device adapter for use with such equipment as cameras, tape recorders, lights, sirens or bells may also be provided.
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