This Listen via the Wall Device could present essential evidence for any private detective and private investigator as it can choose up even minute sounds, via a unique amplifier, via walls, windows or partitions. Attached to the amplifier is a extremely sensitive ceramic microphone which is designed to choose up vibrations that are converted into a voltage which can be then be made into audible sound. The amplifier has an adjustment to enable the sounds to be heard clearly and in the needed volume.
Private detectives and private investigators can basically hold the device to the surface in question, as much as 300mm thick, and then listen in through stereo headphones. All of the evidence could be recorded by connecting a recording device, such as 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 valuable piece of kit for each private detective and private investigator.
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