This Listen through the Wall Device could supply important 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 a extremely sensitive ceramic microphone which is developed 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 allow 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, and then listen in by way of stereo headphones. All of the evidence can 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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