The Elenco Fiber Optic Expedition Kit provides a fascinating introduction to the world of fiber optic communications. This educational kit can be used to build a system that transmits voice or 1kHz signals over a fiber optic cable to a dedicated receiver. The kit includes a printed circuit board (PCB), microphone, speaker, and the necessary fiber optic cable. The transmitter and receiver are designed on separate boards so they can be set up a considerable distance apart, making it an ideal tool for science projects that demonstrate the principles of light and sound transmission.