Science takes a new direction with this fun to build door bell from Great Gizmos. Discover how electricity flows in a circuit, and how it can be controlled and converted into kinetic energy in the form of sound. Kit includes a sturdy base, pre-cut housing, prewired buzzer, battery holder and self-assembly switch. Ages 8 and over.

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Batteries: 2 AA batteries required Product Dimensions: 22.9 x 15.2 x 5.1 cm