In the modern era where everything relies on technology, using a simple lock key for security is insanely backward. Even the intruders of today’s world use technology. Therefore, we must have to use some kind of locks circuits that can secure the homes, offices, banks, lockers, and places that needs security. And, not just secure it but also enable the user to get the update or news through the alarm when anyone passes by. Hence magnetic reed switch can be used for this purpose. So, in this article, we are going to make the Door Security Alarm Circuit using Magnetic Reed Switch.

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Working Explanation

Build the Door Security Alarm Circuit using Magnetic Reed Switch according to the above diagram. For video tutorial, click the below link.

When there is someone around the reed switch device, the magnetic force gets generated parallel to the sensor. This magnetic force builds the whole magnetic circuit and gives opposite polarities to the contacts of a reed switch.