This camping trip alarm can be installed in campgrounds, farms, entrance areas, gates, restricted areas etc. It can enhance perimeter security for your property and yourself. keep dangerous animals out of your camp site. (Note:Our device will not harm anything, it's just designed to make a loud sound to remind you to keep safe).EASIERE: This Trip alarm security device uses a low-placed and concealed trip wire, tethered to the device itself which creates a loud audible alert when the activator pin is pulled. The perimeter alarms are spring triggered, reloadable, and endlessly reusable for your property and personal security.HIGHER QUALITY: this perimeter alarm is made with matching 6061 aluminum recycled aluminum and rustproof body. camping trip lover or anyone who needs to protect their property effectively shouldn't miss this perimeter trip wire alarm device.WIDE COMPATIBLE: The 12 gauge camping trip alarm built for perimeter , you can use it with 12ga blanks or 12ga flares. And you can use the 209 primers with a 209 adapter, 22 primers with a 22 adapter, blank with a adapter for this device(Note: these accessories are not included but you can get them in any shop).WARNING: Do NOT use live. Please keep away from materials, and use it with caution.Colour:BlackMaterial:MetalPackage Contents:6 * Trip AlarmOnly 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.