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