The money-locker or closed chamber anti-pry alarm circuit

Published:2011/6/29 6:32:00 Author:Seven | Keyword: money-locker, closed chamber, anti-pry | From:SeekIC

See as the figured circuit, it consists of the chamber linked switch SB, electric switch, light control sound circuit and audio amplifier, etc. If it is fixed in a closed chamber or money-locker, when the chamber or locker is pried, the circuit will make purring alarm sound, so the thief will retreat.



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