Motion AlarmUnique Spy Toy Set For kids Teens: The SpyX DIY kit shows the science behind the spy gadgets. A cool scientific toy that you can build your own spy motion detector device and it really works! Train yourself the smartest secret agent! Science Alarm toy Device Building Kit: The DIY spy kit includes a motion sensor, a battery module, a volume knob, a motion module, an on off switch, and a speaker. Adjust the motion sensor toward the direction of where