Build a Home Alarm Loop Circuit Diagram

Every one need security him home to day i share a article about house alarm. How to Build a Home Alarm Loop Circuit Diagram ? This is a simple loop alarm circuit , This circuit offers open and closed loop contacts (switches 1,2,3) that triggers the alarm ON and stays ON for 5 -10 minutes. The triggering delay (entrance/exit) is 27 seconds. This simple alarm circuit Has also a cancel button for resetting the circuit to stand-by mode again.It uses 4001 and 4011 gates and one NPN transistor who drives the siren.

Home Alarm Loop Circuit Diagram

Build a Home Alarm Loop Circuit Diagram

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