Single Zone Alarm


Posted on Aug 30, 2012

A single zone alarm circuit with entry and exit delay and other facilities. 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). When the power is applied, if there`s a fault the buzzer will sound and you should switch off again and check for open doors, windows, etc.


Single Zone Alarm
Click here to download the full size of the above Circuit.




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