1. Early Warning System: This alarm can alert for perimeter incursions and enhances perimeter security on private property, campgrounds, farms, barns or restricted areas. 2. 360 Coverage: Multiple trip wires on a single unit provide 360 coverage with a trip alarm that sounds loudly when the alarm is activated. 3. Reusable Design: Perimeter trip alarm is unlimited and reusable and can be installed in paths, entrance areas, connected to doors, gates, etc. Type:12 Gauge Trip Wire Perimeter Alarm Due to different batches, the appearance, color and printing of the product may be different, which does not affect the use. Material: Metal colour: green Package Contents: 1 x Perimeter Trip Alarm Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.