Disconnect anti theft alarm circuit

Posted on Mar 28, 2007

It uses reed KR V control thyristor conduction, with 555 integrated circuit path consisting multivibrator as an alarm generator. When the door is closed, the permanent magnet close to the reed switch KR, with normally closed contacts reed contacts open,

Disconnect anti theft alarm circuit
Click here to download the full size of the above Circuit.

the thyristor V close - not the police. When the door was forced open, the magnet leave KR, V conduction, namely the police.

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