This Listen through the Wall Device could provide essential evidence for any private detective and private investigator as it can pick up even minute sounds, via a special 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 allow the sounds to be heard clearly and at the required volume.
Private detectives and private investigators can simply hold the device to the surface in question, up to 300mm thick, and then listen in through stereo headphones. All of the evidence can be recorded by connecting a recording device, for example an MP3 player, into an audio output socket. A 9 volt battery powers the listen through the wall device and will give private detectives and private investigators as much as 24 hours of use. This is surely a very beneficial piece of kit for every single private detective and private investigator.
http://www.privatedetective-tower-hamlets.co.uk
4 Torwood Mount, Old Torwood Road, Torquay, TQ1 1PX