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This Listen through the Wall Device could present vital evidence for any private detective and private investigator as it can pick up even minute sounds, through a special amplifier, by means of walls, windows or partitions. Attached to the amplifier is actually a highly sensitive ceramic microphone which is created to pick up vibrations which are converted into a voltage which can be then be produced into audible sound. The amplifier has an adjustment to allow the sounds to be heard clearly and at the needed volume.
Private detectives and private investigators can basically hold the device to the surface in question, up to 300mm thick, and then listen in via stereo headphones. All the evidence could be recorded by connecting a recording device, including an MP3 player, into an audio output socket. A 9 volt battery powers the listen via the wall device and will give private detectives and private investigators as much as 24 hours of use. This is surely a very helpful piece of kit for each and every private detective and private investigator.
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