Save with this pack of 10 buzzers. 3 Volts DC 400Hz. Great for Morse code circuits.
Works on 3 V DC (any 2 AA batteries in series will do.)
Create your own circuits or test batteries and solar cells with this buzzer. Connect it to a battery and a key switch to make your own Morse code circuit.
Dig deeper, and discover the fascinating crystal structures of minerals and rocks with this great kit!
This genuine meteorite is great for the rock collector in your family!
Is it a demonstration of a scientific law or a work of art?
This classic desk toy will keep you amused!
Have fun building your very own FM radio!
Build an electromagnet, an electrical catapult, a doorbell chime, a telegraph, and more with this kit!