Learn the basics of fiber optics communications while you build this exciting kit. Transmit your voice or a 1kHz signal through the fiber optic cable to a fiber optic receiver. Comes complete with all of the necessary components; including PC boards; microphone; speaker and fiber optic cable. Transmitter and receiver (BOTH included) on separate boards; can be located hundreds of feet apart. Use for science projects. Includes 3 ft. of fiber optic cable.