How To Make A Laser Light Security Alarm System

In This Video I Am Going To Show You How To Make A Laser Light Security Alarm System.

What You Need To Build This Project

▪BC547 Transistor
▪2.2KΩ Resistor
▪Red LED
▪LDR (Light Dependent Resistor)
▪4V Battery
▪Buzzer
▪SPST Switch
▪Red Laser Light etc.

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Видео How To Make A Laser Light Security Alarm System канала Apna Creative Idea