Telephone line anti-theft protection warning device circuit diagram

Published:2011/10/21 2:11:00 Author:Rebekka | Keyword: Telephone line , anti-theft protection , warning device | From:SeekIC

Call timer circuit is shown as above. The protective alarm deviceis installedin the user telephone line, when telephone line is stolen,short circuit, open circuit or leakage, thealarm signal will be issued for timely processing. The protective alarm does not need to change the structure and wiring.



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