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This Listen via the Wall Device could offer essential evidence for any private detective and private investigator as it can choose up even minute sounds, through a special amplifier, through walls, windows or partitions. Attached to the amplifier is really a extremely sensitive ceramic microphone which is created to pick up vibrations which are converted into a voltage which could be then be made 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, after which listen in via stereo headphones. All the evidence could be recorded by connecting a recording device, like 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 really is surely a very helpful piece of kit for every private detective and private investigator.
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