2PCS Perimeter Trip Alarm 12 GThe trip alarm can be easily attached to trees, posts, or frames via the screw holes or zip tie notches. You can install the trip alarm device around campsites, farms, barns, or restricted areas for protection against unwanted intrusions. Deploy to keep coyotes from livestock; keep thieves out of your home and dangerous animals out of your camp site. Made completely of rustproof high-quality aluminum the perimeter alarms are spring triggered, reloadable, and endlessly reusable for your property and personal security. Reliable for thousands of uses, it is the most advanced trip alarm on the market that can enhance security for your property. Every camping trip lover or anyone who needs to protect their property effectively shouldn't miss this perimeter tripwire alarm device. Setting up a perimeter trip alarm with blanks around your camp or house. Alert you when wild animals or thieves approaches your area. Attach the device vertically to by screws or straps. Set trip wire with firing plate. The trip alarm is widely used in camping, home security, garden protection, and other outdoor activities. It can be used to protect your property from intruders. Adapter: with .22 Adapter Product Dimensions 3.62 inch D x 1.14 inch W x 1.14 inch H Alarm: 1 Colour:As Shown Material:Aluminum Package Contents: 1 set x 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. SZRH A-F Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.