cheap perimeter alarm for security

Here is a example of a cheap perimeter alarm for security I made. I have about $2.50 in the whole thing. Very easy and small. I carry several of these in my BOB. Please click subscribe. If your in the market for supplies don't forget to visit the Ready Store through the link below to buy all of your Prepping and or survival supplies. http://www.thereadystore.com/?aid=4d76b4af22fb5