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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! 6 additional circuit projects can be done with this kit as well; a Siren Motion Detector, an Alarm Motion Detector, a Police Car Siren Sound, Fire Engine Siren Sound, Machine Gun Sound and a European Siren. The colorful, step-by-step instructions make these electronic experiments simple to build and use.
Snap Circuits PRO makes learning electronics a "snap". You can
build over 500 experiments just by following the colorful pictures in the manual. Enjoy hours of educational fun while learning ...