DIY Perimeter Alarm – So Easy!
Worried about protecting your property? You’re right to be – there’s lowlife in plenty out there!
Protect your property’s perimeter with this so simple DIY Trip Wire Alarm. Just get hold of a surplus smoke grenade and then watch the video below. It’s not difficult at all!
I like the way that this project is explained – clear and simple, the way it should be
Public domain image from Google Images