Clearance item light beam receiver/transmitter with case
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Up to 30 foot range, 1/4 mile with simple lenses! Easily transmits through windows. Runs on 9-12vdc. Kit includes separate receiver and transmitter modules for unlimited possibilities. Transmits a modulated infra-red light beam up to 30 feet without lenses, up to 1/4 mile using simple lenses. Since the beam is modulated with a 30 khz carrier (like am radio) there is no effect from 60 hz hum that is produced by indoor lighting. Easily transmits through windows - ideal for bugs or listening to ir television remote controls. The transmitter can use any type of mic and is very sensitive. The receiver employs an ir pin diode detector and puts out enough power to drive any speaker or earphone. The pc board is cleverly scored so you can easily separate the transmit and receive sections so they can be used individually to transmit at one location and receive at another. Units run on 9 to 12 vdc. Dont forget our slick matching case set with red ir end panel. Used separately, the light beam transmitter and receiver can establish a unique communications link for audio or data. This is essentially what those high end wireless headsets consist of. Wire the transmitter to the auxiliary output of a hi-fi and the receiver to a set of wireless earphones! Or how about an infrared repeater. You can use the receiver to detect your television, vcr, or stereo remote control unit and re-transmit it around corners or from twice the distance you could originally! Note that the use of light in electronics communications makes them immune to the kinds of interference or unintended interception associated with radio transmission and reception. Also, the design of the transmitter and receiver on the same circuit board provides for easy duplex operation. This allows you to easily combine two kits as sort of a light beam walkie-talkie capable of transmitting and receiving information at the same time. Consider also that infrared energy is associated with heat. Try listening to a candle or other heat sources. How about using the receiver to detect heat losses where cold drafts are found
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