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The SPECTRA LASER is a professional piece of equipment allowing the operator to carry out undetected surveillance from outside a building.Thanks to its unparalleled features, this microphone is able to pick up room audio from a distance without even entering the target room: by demodulating the transmitted IR laser beam bouncing fromthe target window, this equipment can receive and convert into electronic signals the slight window pane vibrations caused by acoustic waves in the room (speech) .Laser beam bouncing off the target window is theferefore converted into electronic signals, then filtered, amplified and fed into a recording unit connected to its own amplifier with speaker / headphones.Use of sturdy tripods (provided) is required in order to enable proper operation and correct alignment: the emitted IR laser is invisible thus making surveillance virtually undetectable, besides, the whole system is disguised for maximum concealment / ease of suspects. A special alignment / searchtone device is also provided for correct system setup.
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