Long Range Motion Sensor System- Dakota Alert MTPR-4000 Wireless Motion Detector & Receiver, Camping Perimeter & Trip Wire Alarm Device, Monitor Driveways, Backyards, Entrances, Deer Trails and More : Amazon.co.uk: DIY &
Technaxx Germany PIR Motion Detection Sensor Car Alarm System Vehicle Interior Monitoring 110dB Siren Charging Function 2 USB Ports Portable Alarm with Remote Control for Home Camping TX-100 : Amazon.co.uk: DIY &
World's Smallest IR Perimeter Security Alarm (self re-arming!) « SurvivalSchool.com- Midwest Native Skills Institute