With 200-in-1 Electronic Project Lab by Elenco children learn about transistors, transformers, diodes, capacitors, oscillators, basic electronic circuits, and schematic symbols. With this electronic kit kids can build your own radio, AM broadcast station, burglar alarm, electronic game, ohmmeter, telegraph, rain detector, amazing sound effects, and much more! 200-in-1 Electronic Project Lab contains speaker, earphone, meter, seven-segment LED digital display, out-front controls, and more! This kids multiple electronic projects toy requires 6 AA batteries. The kids electronic lab uses spring hook-up method. 200-in-1 Electronic Project Lab comes with the easy-to-read illustrated lab-style manual.