Fire Alarm Science Technology Teaching Aid DIY Experiment Material Kit Children Puzzle Invention

1. Material: wood + plastic + electronic components
2. Power supply: 2 x AA batteries (not included)
3. Safe material, durable and durable, children play more at ease
4. Improve children hands-on ability and exploration spirit, suitable for school and home teaching
5. Combine the toy with scientific principles, make science more simple and interesting, let children understand the fire alarm knowledge
6. Training children practical ability, hand-eye coordination, exercise thinking, develop intelligence, inspire creativity, explore science
7. Size: about 9 x 7.5cm