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This Listen by way of the Wall Device could offer vital evidence for any private detective and private investigator as it can pick up even minute sounds, through a unique amplifier, by way of walls, windows or partitions. Attached to the amplifier is really a very sensitive ceramic microphone which is designed to choose up vibrations that are converted into a voltage which may be then be produced 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 merely hold the device to the surface in question, as much as 300mm thick, and then listen in via stereo headphones. All of the evidence could be recorded by connecting a recording device, for example 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 really is surely a very valuable piece of kit for each and every private detective and private investigator.

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