DIY a Laser Anti-theft System

by bestutsource in Circuits > Lasers

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DIY a Laser Anti-theft System

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DIY a Laser Anti-theft System

1. First Understand the Circuit Diagram

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2. Solder the Components According to the Circuit Diagram

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3. Link the Relay With Dupont Wire and Power On

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4. As Shown in the Figure, the Laser Is Aimed at the Photoresistor, the Relay Light Is On, and the Normally Open End Is Connected.

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Remove the laser, the relay light is off, and the normally closed terminal is connected

A buzzer can be connected to the relay to form an alarm circuit