Gotcha Gadgets teaches children the basics of electronics while playing tricks on family and friends. With this book kids can build a door alarm, a motion detector, a light sensor, and a push button sound machine. Then use them to set a snoopy sibling trap, wire the biscuit jar, play audio limbo, confuse the cat, and more. Includes four build-it-yourself electronic gadgets and four hilarious sounds. Putting science and electronics in the service of immaturity. What You Can Make Motion sensor Light sensor Door alarm Push-button sound machine 9 different sounds What You Get Comes with a 32-page book of science and sneakiness 1 electronics module with speaker LED photo detector contact switches 1 alligator clip 1 gadget dock 4 double-sided gadget covers WHAT IS KLUTZ? Klutz is a premium brand of book-based activity kits, designed to inspire creativity in every kid. Our unique combination of crystal-clear instructions, custom tools and materials, and hearty helpings of humor is 100% guaranteed to kick-start creativity. Super-clear instructions Open-ended Creativity Rewarding Reading Skills to Build On Everything You Need