Star Wars Spyware Electronic Roleplay Toy Perimeter Droids Trip Wire Alarms Detect intruders with these Trip Wire Perimeter Droids based on the Darth Maul's Sith Probes from  Star Wars: The Phantom Menace! An invisible beam of light is projected between the two units, and when someone or something breaks the beam, the alarm will sound and the LED will flash! The Spy Gear Trip Wire Perimeter Droids use LED light, not lasers, for safety. The droids measures about 5-inches tall (including antenna). Requires 4x 'AA' batteries, not included. Ages 6 and up.