Professional set-trip wires are basically designed to protect something valuable. For security purposes, a trip wire alarms the owner whenever an intruder comes in and accidentally steps through the line.
With the use of the wire set up in the entrance or surrounding the valuables, an alarm is connected warning the person keeping an eye on it that someone is walking through without his permission.
When you have seen agents-inspired movies, certainly you could relate to what trip wires are. However, you too can create your own and install it in your backyard or front, just in case someone is trying to enter your house.
All you just need are some of those things and you can certainly create your own trip wires. It could be better too when you got some smoke alarms that will support the fire coming from your trip wires.
Video from MrGear