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DIY Laser Security System Using BC548 Transistors | Simple Alarm Circuit with LDR \u0026 Buzzer

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Home Security Tip! #shorts #shortsfeed #security #safety #diy #home #homesecurity #thefixer

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UNCOMPROMISING SECURITY SYSTEMS THAT LEAVE NO CHANCE FOR INTRUDERS

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How to Install Your Own DIY Security System | Ask This Old House

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Cheap Wi-Fi IP Surveillance Camera (Very little DIY needed)

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Diy security project 😜#diy security #dc motor#motor #experiment #ideas

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how to make a simple laser security alarm | amazing science project | thief detection alarm

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