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This Listen by means of the Wall Device could supply crucial evidence for any private detective and private investigator as it can choose up even minute sounds, via a special amplifier, via walls, windows or partitions. Attached to the amplifier is a extremely sensitive ceramic microphone which is created to pick up vibrations which are converted into a voltage which might be then be made into audible sound. The amplifier has an adjustment to enable the sounds to be heard clearly and in the required volume.

Private detectives and private investigators can simply hold the device to the surface in question, up to 300mm thick, and then listen in by way of stereo headphones. All the evidence might be recorded by connecting a recording device, including an MP3 player, into an audio output socket. A 9 volt battery powers the listen through the wall device and will give private detectives and private investigators up to 24 hours of use. This is surely a very useful piece of kit for every single private detective and private investigator.

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