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This Listen by means of the Wall Device could provide 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 actually a very sensitive ceramic microphone which is designed to pick up vibrations that are converted into a voltage which can be then be created 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 basically hold the device to the surface in question, up to 300mm thick, after which listen in via stereo headphones. All the evidence might be recorded by connecting a recording device, for example an MP3 player, into an audio output socket. A 9 volt battery powers the listen by means of the wall device and will give private detectives and private investigators up to 24 hours of use. This is surely a really valuable piece of kit for each private detective and private investigator.
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