• Assemble a double-security lock with a combination code and key to hide your most prized possessions
• Then use the included electronic components to build a door alarm or pressure plate to keep your valuables from intruders
• Find even more spy activities in our crystal clear instructions with easy-to-find materials from home
• Includes:
  • 6 plastic vault panels
  • Clothespin
  • Key
  • Buzzer
  • Battery box