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YouTubeEnergy Tricks
How to Build a Laser-Based Home Security Alarm System 🔴🔐 | Easy DIY
Learn how to build a laser-based home security alarm system using simple electronic components. This DIY project uses a laser beam and light sensor to detect interruption and instantly trigger an alarm. When someone crosses the laser path, the beam is blocked, the sensor detects the change, and the buzzer turns ON immediately. Perfect for ...
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