The Science Cube Telegraph Kit By Supertek Scientific

Discover how people communicated across long distances before the telephone! With this kit you can experience a little bit of history, learn Morse Code and even send a secret message to a friend. Kit includes D cell battery holder, contact key, miniature light bulb holder, two miniature light bulbs, five 12" connector cords, buzzer and experiment guide. For ages 7 and up. D cell battery not included.