Doorbell Making Kit
$34.99
Brand 4m
Learn about electromagnetics as you transform a screw into a magnetic striker. Use it to complete an electric circuit and construct this handy doorbell!
Set contains:
• Plastic chassis
• Metal bell
• Copper wire
• Screws
• Detailed instructions
Also required but not provided: 2 x 1.5V AA battery and a small crosshead screwdriver.)