A Transistor Based Single Zone Alarm circuit


Posted on Feb 7, 2014

The circuit features automatic Exit and Entry delays, timed Bell Cut-off and System Reset. It has provision for normally-open and normally-closed switches and will suit the usual input devices (Pressure Mats, Magnetic Reed contacts, Foil Tape, PIRs and Inertia Sensors)..


A Transistor Based Single Zone Alarm circuit
Click here to download the full size of the above Circuit.




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