[High Quality & Reusable]: Crafted from aluminum alloy, this perimeter alarm system features spring-triggered mechanics, is reloadable, and can be used repeatedly for both property and personal security. The trip alarm is dependable for thousands of activations. This perimeter tripwire alarm device helps ensure peace of mind every night. [Easy to use]: It can be easily attached to trees, posts, or frames using the provided screw holes or zip tie notches. The alarm signaling device incorporates a low-placed, concealed trip wire that triggers a loud audible alert when the activator pin is engaged. [Rapid Deployment]: Quick to set up across pathways and entry points, it can be affixed to doors, gates, and more. Ideal for deterring coyotes from livestock, this trip alarm device can be set around campsites, farms, barns, or restricted areas to protect against unwanted intrusions. It offers a simple setup and is a cost-effective solution for alerting you to trespassers. [Wide range of applicability]: This adaptable, reusable trip line activates various supportive rounds, including a 12ga blank or optional pepper gas and flashbang rounds, also compatible with a 209 primer and .22 adapter (not included). [Make sure this is what you want]: Our devices are designed to produce a loud noise to alert you when necessary and are not intended to cause harm. Please ensure that this meets your needs. The perimeter trip alarm system is for outdoor use only; keep it away from sensitive materials and exercise caution during use. User assumes all risks and liabilities associated with this product. style: With accessories Material: aluminum alloy colour: ArmyGreen Package Contents: 1 set x Perimeter Trip Wire 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 to slightly differ from the actual item. Measurement allowed error is +/- 1-3cm.