Description Assemble a double-security lock with a combination code and key to hide your most prized possessions. Then use the included buzzer and electronic components to build a really working door alarm or pressure plate to keep your valuables from prying eyes. With easy-to-find materials from home and our step-by-step instructions in the book, you'll find even more spy activities such as dusting for fingerprints, encrypting and decrypting codes, making diversion decoys, and more! Comes with: 6 plastic vault panels, clothespin, key, cord, buzzer, battery box. Product Details ISBN13: 9781338589245 Format: Art and Craft Kit Ages: 8 and up Grades: 3 and up Genre: Functional and How-To Pages: 32 Weight (lbs): 1.3 Dimensions: 1.9 x 8.1 x 11.7 Language: English