Wow your students with a visual demonstration of sound being transmitted over light waves from a laser beam. Simple and easy to set up, this state-of-the-art equipment package is a breeze to use. Simply insert the microphone into the jack at the rear of the laser, plug in the VAC-to-DC power adapters and aim the laser beam at the audio receiver's optical detector. Then talk, sing, hum or create almost any imaginable sound into the microphone. Equipment set-up is less than five minutes and the sounds are sent across the room and recreated within nanoseconds.

Students will be amazed that somehow voices are electronically and optically relayed from one remote point to another and converted back into sounds-without benefit of a "hard connector" in-between.

The project's audio receiver features total solid state design, adjustable volume control, self-contained and durable surface-mount electronics design, 110 VAC operation and impact-resistant enclosure. Inside the receiver are the sensitive optical semiconductor detector, amplifier, power conditioning electronics and 10 cm (4 in.) speaker.