Tag: door open alarm circuit

IC 555 / IC 741

Door Open Alarm Circuit using Hall effect Sensor

June 15, 2019
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For Random application Simple Door Open Alarm circuit using hall effect sensor designed with timer IC…

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Hobby Circuits

Door Open Alarm Circuit using Reed switch

March 23, 2017
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If you want to Protect some door from unwanted access then you can use this simple…

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