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This Listen via the Wall Device could offer important 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 designed to pick up vibrations that are converted into a voltage which may be then be created into audible sound. The amplifier has an adjustment to enable the sounds to be heard clearly and in the necessary volume.

Private detectives and private investigators can merely hold the device to the surface in question, as much as 300mm thick, after which listen in by way of stereo headphones. All of 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 via the wall device and will give private detectives and private investigators up to 24 hours of use. This really is surely a really valuable piece of kit for each and every private detective and private investigator.

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