1、ENHANCE PERIMETER SECURITY: The trip alarm protects homes, campsites, and property by setting up a perimeter around the area. It can be deployed quickly across paths and entry zones, attached to doors, gates, and more. Deploy to keep coyotes from livestock; keep thieves out of your home and dangerous animals out of your camp site. 2、EASY TO SET UP The perimeter alarm security device uses a low placed and concealed trip wire, tethered to the device itself which creates a loud audible alert when the pin is pulled. The alarm can be deployed quickly across paths and entry zones, attached to doors, gates, and more utilizing the screw eye screw.You can install the trip alarm device around campsites, farms, barns, or restricted areas for protection against unwanted intrusions. 3、COMPATIBLE WITH: This versatile, reusable trip line alarm activates 209 primers. (NOTE: these accessories are not included but you can get them in any shop, and trip wire is used to set your perimeter but is not included.) It is easy to set up and is endlessly reusable. 4、SOLIDLY CONSTRUCTED: Made with matching recycled aluminum and rustproof body, the perimeter alarms are spring triggered, reloadable, and endlessly reusable for your property and individual security. Reliable for thousands of uses. Suitable for every camping trip lover or anyone who needs to protect their property effectively. 5、SAFE TO USE: The perimeter trip alarm system is for outdoor use only, keep away from flammable materials, and use it with caution. Our devices are not meant to harm anything, just to create a loud noise to alert you when you need it. Item Type: Trip Alarm Material: Metal Product Size: Approx. 12x1.5x1.5cm / 4.7x0.6x0.6in Function: Protect Home, Campground and Property 1 x Trip Alarm 1 x Snap Pin