Check the listing for details. 9V Homemade Trip Wire Alarm Box. Condition: New. Listed at 20.00 USD. This 9V homemade trip wire alarm box is a must-have for any security enthusiast. With its easy-to-use design, you can quickly and effortlessly set up a trip wire that will alert you to any unusual activity. Perfect for use in your home or office, this battery-operated device is ideal for anyone who wants to keep their space safe and secure. Featuring a compact design, it is easy to conceal and can be placed in any discreet location. So whether you're looking to protect your family or your belongings, this trip wire alarm box is the perfect solution. With its reliable performance and simple design, you can rest assured that your property will be safe at all times. This can be connected to a tree or a post. Runs off of a 9V. These are new, never used. Some paint chipping especially where the screws are.This 9V homemade trip wire alarm box is a must-have for any security enthusiast. With its easy-to-use design, you can quickly and effortlessly set up a trip wire that will alert you to any unusual activity. Perfect for use in your home or office, this battery-operated device is ideal for anyone who wants to keep their space safe and secure. Featuring a compact design, it is easy to conceal and can be placed in any discreet location. So whether you're looking to protect your family or your belongings, this trip wire alarm box is the perfect solution. With its reliable performance and simple design, you can rest assured that your property will be safe at all times. This can be connected to a tree or a post. Runs off of a 9V. These are new, never used. Some paint chipping especially where the screws are.