This Listen through the Wall Device could offer important evidence for any private detective and private investigator as it can choose up even minute sounds, by way of a unique amplifier, by way of walls, windows or partitions. Attached to the amplifier is a very sensitive ceramic microphone which is designed to pick up vibrations that are converted into a voltage which can be then be made into audible sound. The amplifier has an adjustment to allow the sounds to be heard clearly and in 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 by way of stereo headphones. All of the evidence may be recorded by connecting a recording device, such as 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 up to 24 hours of use. This is surely a very valuable piece of kit for every single private detective and private investigator.
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