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In this video, the author is going to create a low-cost door alarm system using a razor blade and few components.

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About this item 120 LOUD ALARM - this Magnetic sensor window door alarm loud enough to detects entry, prevent kids and babies going out the house, protecting your home or office whether you are in or out. (audible up to 750 feet/230M away) EASY INSTALLATION - Easily mounted by adhesive, tape it on the window or door then all is done! No wiring needed! No screws needed! Completely DIY! (NOTICE: MAKE SURE THE GAP BETWEEN THE ALARM AND MAGNET PART WITHIN 0.4IN.) 2022 UPGRADED ULTRA - SLIM…

How to Make Simple Door Alarm by Using Clothes Peg (DIY): Easiest And Simples Way To Make Door Alarm With Household Items Including Clothes Peg (Clothespin) And As Always Its Cheap, Easy And Fun To Make . Even Though Its Too Simple But Its Very Efficient And Works Perfectly , It Can Help You Save And Prote…

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In this project we will see how to use Home Assistant software to create an intrusion alarm system for your home. The system will basically detect if the door is opened without authorization and then send a notification to your smartphone. We will use a magnet with a reed switch to determine if the door […]