Hello friends, how are you all, today we are going to make a lesser seacurity alarm system, you can make it for your home and install it in the house, you can put it in such a place that if someone suddenly comes to your house, then the alarm will sound. Let's start, as soon as someone comes to your house and crosses the laser light, the alarm will start sounding, so let's start making this circuit.
In this we have used these components
PCB
LDR
Lessar Module
2N2222 Transistor
33k Resister
Buzzer
9v Battery
Switch
This is the diagram of laser security alarm system :-
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