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LEGO PART 1486c01 Duplo Sound Brick 2 x 2 with White Button | Rebrickable - Build with LEGO
LEGO Sets with Part 4774c02 Electric Light & Sound Brick 2 x 2 x 1 & 1/3 Space Siren Complete, 9V with Two Noises
How to add sound, light and motion to your LEGO creations with the PFx Brick
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LEGO Electric Light & Sound Brick 1 x 4 with Twin Top Lights (4771) | Brick Owl - LEGO Marketplace
