Techcdb Doorbell Circuit Power Module – Low-Voltage Transformer-Compatible Control Board

Description

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 precut housing prewired buzzer battery holder and selfassembly switch. Ages 8 and over.

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