Anti-bag-snatching alarm circuit

Published:2012/9/16 20:34:00 Author:Ecco | Keyword: Anti-bag-snatching, alarm | From:SeekIC

This circuit, enclosed in a small plastic box, can be placed into a bag or handbag. A small magnet is placed close to the reed switch and connected to the hand or the clothes of the person carrying the bag by means of a tiny cord. If the bag is snatched abruptly, the magnet looses its contact with the reed switch, SW1 opens, the circuit starts oscillating and the loudspeaker emits a loud alarm sound.



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