Modular Burglar Alarm


Posted on Nov 1, 2012

This circuit features automatic Exit and Entry delays and a timed Bell Cut-off. It has provision for both normally-closed and normally-open contacts, and a 24-hour Personal Attack/Tamper zone. It is connected permanently to the 12-volt supply and its operation is `enabled` by opening SW1. By using the expansion modules, you can add as many zones as you require; some or all of which may be the inertia (shock) sensor type.


Modular Burglar Alarm
Click here to download the full size of the above Circuit.




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