Spyder Trap Product Description Guard Your Space from Other Spies -- Not even Tom Cruise could avoid the trip lines of this impossible to beat trap system. Catch intruders from any direction with motion-sensitive trip lines. Attach the four retractable lines to book bags, desks, lock boxes, and more. Once tripped, an alarm sounds and lights flash, letting you know of an invastion. The trap system allows you to protect over 23 square feet. Requires three AAA batteries, sold separately. • Product Features 1. Protect your stuff from sneaky enemies 2. Attach the 4 retractable lines to book bags, desks and more 3. Motion-sensitive trip lines catch intruders coming from every direction 4. Alarm and lights sound an invasion, touch activates the alarm, protects over 23 square feet