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. 4. Easily Hidden: The alarm is in the color of olive grass, which is perfect for heavily wooded areas and can be easily hidden. 5. Simple Connection: The alarm device can be easily attached to a tree, post or frame through screw holes or zipper cutouts. Due to different batches, the appearance, color and printing of the product may be different, which does not affect the use Colour:D:yellow Material:Metal Package Contents: 1 x Perimeter Trip Alarm Kit 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.