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This Listen via the Wall Device could provide important evidence for any private detective and private investigator as it can choose up even minute sounds, through a special amplifier, by means of walls, windows or partitions. Attached to the amplifier can be a extremely sensitive ceramic microphone which is designed to choose up vibrations that are converted into a voltage which could be then be created into audible sound. The amplifier has an adjustment to enable the sounds to be heard clearly and at the required volume.
Private detectives and private investigators can basically hold the device to the surface in question, up to 300mm thick, after which listen in by way of stereo headphones. All the evidence could be recorded by connecting a recording device, like 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 as much as 24 hours of use. This really is surely a very valuable piece of kit for each and every private detective and private investigator.
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