Build your own working model of one of history’s most important communication devices — the telegraph!

This engaging DIY STEM kit lets students and hobbyists recreate the magic of Morse code while learning about electric circuits, switches, and electromagnetic signaling. Perfect for classroom demonstrations, science fairs, or just tinkering fun at home, this kit includes everything you need to assemble a functioning telegraph key — even a screwdriver!

When completed, pressing the wooden key completes the circuit, activating both a buzzer and a red LED light to simulate the familiar “dot and dash” beeps of Morse code.

Made from durable laser-cut balsa wood, this hands-on electronics project is designed for simplicity and repeatable classroom use. It’s a fantastic way to introduce fundamental STEM concepts like current flow, switches, conductivity, and communication systems. Great for science teachers, makerspaces, and camps looking for an educational project that’s as rewarding to build as it is to operate!

Features and Specifications:

• Build your own fully functional model telegraph
• Demonstrates basic circuit and communication principles
• LED and buzzer activate when the key is pressed
• Laser-cut balsa wood frame — lightweight yet sturdy
• Easy, no-solder assembly — screwdriver included
• Downloadable step-by-step instructions available
• Assembled size: approximately 3 x 2.5 x 1.5 in (7.6 x 6.4 x 3.8 cm)
• Ideal for classrooms, STEM programs, and hobby projects
• Suitable for ages 14 and up
• Requires 2 AA batteries (not included)