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Laser Surveillance System for Under $20 : 7 Steps (with ...

    https://www.instructables.com/Laser-Surveillance-System-for-under-$20/
    Using a basic laser pointer and a sensitive amplifier it is possible to listen in on conversations through exterior windows! The price of $20 is simply an estimate, in my case I did not need to buy anything. The system described in this instructable works on the same principle as commercial projects like this: http://www.electromax.com/laser.html http://www.electromax.com/laser.html.

Lasermicrophone.com - professional laser microphones

    https://lasermicrophone.com/
    Our Spectra Laser microphones are professional laser audio surveillance tools that will allow law enforcement professionals to surreptitiously listen in remotely on any premises by using a beam of invisible light as the sound-carrying medium and without any need to break-in or enter the target room. Equipped with cutting-edge technology and ...

LASER AUDIO SURVEILLANCE - TAR IDEAL

    https://www.tarideal.com/product/laser-audio-surveillance-3/
    LASER AUDIO SURVEILLANCE. TA02019. Operated by transmitting an invisible infra red. beam to the window of the targeted room. Provides undectable laser surveillance from. outside a building from a distance of 500m. 🔍.

Amazon.com : Shomer-Tec Laser Surveillance Defeater : …

    https://www.amazon.com/Shomer-Tec-SHLSD-Laser-Surveillance-Defeater/dp/B00ABV7J0C
    The Laser Surveillance Defeater is a new countermeasure device against laser surveillance. How does laser surveillance work? An invisible laser beam is focused on a window. Voices and sound from within the target area are absorbed by the window and transmitted onto the laser beam (called “modulation”).

Laser Audio Surveillance, Laser Spy Equipment, Laser ...

    http://www.spyequipment.com/equipment/listings/l0042.html
    The solution to the problem is our military grade Laser Audio Surveillance System . This system allows the operator to carry out an undetectable surveillance operation from outside the building with a range of up to about 500 meters. It consists of three parts: Laser Transmitter; Laser Receiver; Amplifier Unit with Audio-Recorder

Audio Surveillance & Voice Recorders - SpyGuy

    https://www.spyguy.com/collections/audio-surveillance
    A voice recorder inside a working power bank. Records when it hears sound, up to 50 feet away. 150-days of standby power, 14 days continuous. Stores 576 hours of audio. Has a magnet to conceal under desks and tables. Listen & recharge by connecting it to any computer. $ 169.99. $ 199.99. You save: $ 30.00.

Amazon.com: cheap security camera

    https://www.amazon.com/cheap-security-camera/s?k=cheap+security+camera
    LaView Security Cameras for Home + 2X 32GB SD Cards, PT Home Security Camera System with Motion Detection, Two-Way Audio, Night Vision, Indoor WiFi Camera for Baby/pet, Alexa, USA Cloud Service. 4.3 out of 5 stars. 2,015. Limited time deal. $46.74.

Audio Surveillance Equipment | Audio Spy Gear

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    Laser Mic Makes Eavesdropping Remarkably Simple - …

      https://hackaday.com/2010/09/25/laser-mic-makes-eavesdropping-remarkably-simple/
      The receiver module has a phototransistor to pick up the infrared laser light, and an LM386 audio amplifier to generate the audio signal sent to a pair of headphone. ... of in surveillance that ...

    Laser Listeners - Information Unlimited

      https://www.amazing1.com/laser-listener.html
      May also be used as a long range laser voice communicator with a range usable to 10 miles line of sight with the proper optics. Low cost audio surveillance science project or useful device for listening to power line faults, over pressured pipes, etc. The modules can be set up on individual tripods to show the proof of concept.

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