Development of audio alarm system to provide remote monitoring of warning devices is discussed. Device uses photodiode connected to self-powered audio alarm unit. Photograph of equipment is included.


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    Titel :

    An absentee monitoring device


    Beteiligte:
    Meadows, A. L. (Autor:in) / Birch, D. C. (Autor:in)

    Erscheinungsdatum :

    1972-09-01


    Medientyp :

    Sonstige


    Format :

    Keine Angabe


    Sprache :

    Englisch




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