How to make laser security system at home

You can easily make laser security system.  To make this system I am using LDR (light dependent resistor), one Laser, 5 volt Relay, Variable resistor, 1.6k resistor and one siren light.


Video demo:

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  1. chirag patel 4 years ago

    can you please send me the circuit diagram of this video???

  2. Joan 3 years ago

    It’s nice! Is it for sale?

  3. rahul 2 years ago

    Can you please send me a circuit

  4. Honey 12 months ago

    Can you please send me a circuit…

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