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200-in-One Electronic Project Lab is a classic electronics trainer for expanding the depths of electronics understanding. It uses the spring-wire and breadboard connection methods for quick and easy modifications and trouble shooting. With the projects in this kit, learn about transistors, transformers, diodes, capacitors, oscillators, basic electronic circuits, and schematic symbols. Build your own Radio, AM Broadcast Station, Burglar Alarm, Electronic Game, Ohmmeter, Telegraph, Rain Detector, Sound effects tool, and Much, Much More. The 200-in-One Electronic Project Lab has built-in speaker, earphone, meter, seven-segment LED digital display, out-front controls, and more. No soldering required.