Spy Gear Lazer Tripwire
When you have something valuable to protect in your home, only the best security will do — that's why you need the Spy Gear Lazer Tripwire ($25). It uses invisible LED beams projected from three units, so you can form a perimeter that even Catherine Zeta-Jones can't dip beneath. When an intruder breaks the beam, the receiver unit alerts you with an alarm, so you can quickly assess the situation and respond appropriately.