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This Listen by way of the Wall Device could supply important evidence for any private detective and private investigator as it can pick up even minute sounds, through a unique amplifier, via walls, windows or partitions. Attached to the amplifier is a extremely sensitive ceramic microphone which is designed to pick 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 in the needed volume.

Private detectives and private investigators can just hold the device to the surface in question, up to 300mm thick, after which listen in through stereo headphones. All the evidence can be recorded by connecting a recording device, including 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 is surely a really helpful piece of kit for every single private detective and private investigator.

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