Contact Key Switch
The contact key is commonly known to be used in demonstrating Morse code. The Contact Key allows you to open and close circuits by pressing down on a lever. Metal studs ensure a solid contact for maximum conductivity. This product is an excellent tool for science experiments!Box Size: 4.25in (10.80cm) x 2.00in (5.08cm) x 1.75in (4.45cm)Recommended for ages 13 and older.