The ear-piercing sound of an air horn will scare off just about any intruder – two or four legged kinds.
Best of all, this tripwire Air Horn Alarm is easy to make and maintain; check it out!
There are three great characteristics to this simple, inexpensive tripwire Air Horn Alarm system: It is easy to set up, very loud and very inexpensive to buy the materials needed!
It also can be set up as a system that can give you virtually 380-degree alarm protection!
How would you improve upon this design? Tell us below.