Hello friends, in this article you will know how you can make a simple secret door lock system, you can make it and install it in your home or room and surprise your friends.
In this, we have used the components given below, if you want to buy these components, then there is a link with the name of the components, you can buy from that link -
Electric Solenoid Lock - https://amzn.to/3v1NFj8
12v Relay - https://amzn.to/3mQHoVa
BC 547 transistor - https://amzn.to/2VPUF5s
100k Resistor - https://amzn.to/3gSssSH
Reed Switch - https://amzn.to/3ipaTKc
This is its circuit diagram -
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