- Build your own motion detector, and whenever somebody walks in front of it, the sound of a laser comes out of the speaker and a red light flashes! Build different circuits with electronic blocks that snap onto a clear plastic base grid.
- 6 additional circuit projects can be done with this kit: - Siren Motion Detector - Alarm Motion Detector - Police Car - Fire Engine - Machine Gun - European Siren The colorful, step-by-step instructions make these electronic experiments simple to build and use.
