Discover spy-tacular STEM skills as you create an alarm system, encode secret messages, and learn to investigate fingerprint clues! Assemble a double-security lock with a combination code and key for top secret missions. Then, use the included electronic components to build a door alarm or pressure plate for extra security. Kit includes plastic vault panels, clothespin, key, cord, buzzer, battery box, and instructions to make more fun spy activities with everyday household items. Imported.