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Learn about the exciting world of fiber optic communications! Hear your voice after it is converted to light, transmitted through an optical fiber, and converted back to sound. You get to put together the transmitter and receiver electronic circuit boards and then link these with an optical cable. The transmitter converts sound to light impulses that travel along the optic fiber cable to the receiver, which converts the light back to sound. Includes a 22-page step-by-step project guide, circuit boards, all electronic components, and three feet of fiber optic cable. You supply two 9 volt batteries and a soldering iron. Soldering required.