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, by way of a special amplifier, through walls, windows or partitions. Attached to the amplifier can be a extremely sensitive ceramic microphone which is designed to pick up vibrations which are converted into a voltage which may be then be produced 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 may be recorded by connecting a recording device, like an MP3 player, into an audio output socket. A 9 volt battery powers the listen by way of the wall device and will give private detectives and private investigators as much as 24 hours of use. This really is surely a very useful piece of kit for each and every private detective and private investigator.
http://www.privatedetective-waterlooville.co.uk