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This Listen by way of the Wall Device could supply vital evidence for any private detective and private investigator as it can pick up even minute sounds, by way of a unique amplifier, by means of walls, windows or partitions. Attached to the amplifier is a highly sensitive ceramic microphone which is created to choose up vibrations which are converted into a voltage which might be then be made into audible sound. The amplifier has an adjustment to allow the sounds to be heard clearly and at the needed volume.
Private detectives and private investigators can just hold the device to the surface in question, as much as 300mm thick, and then listen in through stereo headphones. All the evidence might be recorded by connecting a recording device, including 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 is surely a really useful piece of kit for each private detective and private investigator.
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