Picture of HomeMade Rat Trap Alarm System!!!
Why spend hundreds of dollars on Security Systems? When You can make your own. Watch this Instructable to learn how you can make your very own Alarm System Using a Rat Trap.

Click Here For Instructional Video
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Step 1: Materials!!!

Picture of Materials!!!
Grabbed Frame 1.bmp
BB Holder.bmp
Ring Terminal.bmp
2 Wires.bmp
You will need the Following Items

*Rat Trap or Mouse Trap
*Battery Holder W/ Batteries
*Ring Terminal
*Two 12 in pieces of wire -( Length is up to you)

Total Cost- 12-15 dollars

Step 2: Make Alarm System!!!

Picture of Make Alarm System!!!
2 Wires stripped.bmp
RT Glued.bmp
*First Begin By Connecting the The Battery Holder with the Buzzer- Positive Wires Only
(Buzzer +) with (Battery Holder+)
*Strip The ends on the extensions and Connect them with The Negative Wires
(Buzzer-) with (Extension A) and (Battery Holder- With (Extension B)

*Refer to the Diagram Below

  • On the Snapper of the Rat Trap wrap around the bare end of one of the Extensions (extension A)
  • On The Other extension (Extension B) Attach the Ring Terminal And Glue it on the base of the edge.
(Make sure its Vertically below Extension A)

Step 3: Set Up Your Device

Picture of Set Up Your Device
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*Next to wall Near the Door you want to Protect, tape Both the Battery Holder and the Buzzer

*Activate The Rat Trap And Leave it Behind the Door....

Now you can feel more safer.

Step 4: Your Home is Now Protected

Picture of Your Home is Now Protected
Door After.bmp
When the Robber (thief) opens the door, the Rat Trap behind it will go off, once the door comes in contact with it.

Extension A and B will Come Together, Therefore activating the buzzer.
the loud Noise is bound to scare the Robber away and alert someone near by.

If you want to see the Full Results, Watch the Instructional Video Below.

Instructional Video
vdhanotiya2 years ago
I have purchased like this rat trap from the owner of http://menext.org/ it's awesome i like it very much
I did my project by myself
And needed it for a project
Nice but my battier smoked
mr. clean5 years ago
that is a very good idea simple too but i have 1 question why r u wearing rubber gloves in all the pics? trying not to leave finger prints lol.
Nextraker (author)  mr. clean5 years ago
 haha! actually now, its just how I make videos!
oh cool
rocker1016 years ago
how did u guys make tat does it kill a rat????
Your design is great in concept but has one major flaw. you failed to for something getting between your contacts, for example a real rat or feline pet.
I used mouse traps to train my dogs to stay off the living room furniture. I showed them a "set" trap a couple of times, springing it each time (SNAP!) Believe it or not, they learned to tell the difference between a "set" trap and a "sprung" trap so they were not deterred if the "sprung" trap was placed on the cushion. I used "set" traps when I found this out. Got my wife a couple of times - ha ha. A nice loud alarm would probably be funny but might get me divorced.
sorinescu6 years ago
Thanks for sharing - I learned something cool today :)
Howie_D6 years ago
Man that's great. Cheap too!
gagfilms6 years ago
Hahaha...this would be a great prank!
wibrle6 years ago
Cool tutorial, I bet this project would be ideal for pranks too. lol
brandom7416 years ago
very easy, thanks
giannyl6 years ago
well done!
greeenpro6 years ago
Good idea and instructions! The video really helped to see the execution of it too. Thanks!
Tomboys6 years ago
Now you don't even need a cat.