How to Make a Mousetrap Trip Wire Alarm | DIY - YouTube
FithOps 12 Gauge Camping Perimeter Trip Alarm, Includes 2 Pins and Wir
Ramset Perimeter trip wire alarm "The QUAD" | eBay
FithOPS Camp Safe Perimeter Trip Alarm
Shotshell primer perimeter alarm system with Kevlar tripwire and my added touch, a modified junction box for weather housing and holes to feed vines or camouflage netting through. : r/Survival
Tripwire Alarm (X2) - Battlbox.com
50 cal BMG fired outside of a rifle with shotgun shell tripwire alarm | OTF, Switchblade, Stiletto