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interestingengineering.com
How to Create a Trip-wire Alarm with a Few Simple Items
One man created a trip-wire alarm out of just a few items found in his junk drawer, and when triggered it can set stuff on fire!
Doomsday Prepping
Diy Perimeter Trip Wire Alarm
Trip Wire Alarm Diy
Trip Wire Alarm
How To Make Traps
Trip Wire
Home Security Tips
Electronics Basics
Diy Home Security
Interesting Engineering
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