Listen Through Walls Device (Pro)

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A professional listening through wall device capable of penetrating walls up to 12 inches thick.  The highly sensitive microphone and fine tuning noise buffer filter allows you to hear words on the other side of the wall, and you can even record from this clever audio listening bug thanks to a handy output socket. 

Availability: In stock
Listen Through Walls; with High Sensitivity Audio Acoustic Microphone

This is a professional Listen Through Walls device with a high sensitivity acoustic microphone amplifier capable of penetrating solid walls up to 12 inches thick, thus allowing you to clearly hear the audio / conversations on the other side of the wall.

This product is ideal for gathering audio evidence from noisy or abusive neighbours.  The Listen Through Walls Pro is made of high quality brushed aluminium and fitted with a fine tuning filter for a better audio listening quality, plus an audio output socket which allows a voice recorder (not supplied) to be connected to capture audio evidence.

Simple to use, the ceramic contact microphone is gently held against the solid wall to pick up the vibrations through the wall which converted to audible sound through the stereo earphones (supplied).

Powered by one (1) PP3 lithium battery provides 24 hours of continuous use.

  • Noisy Neighbours - Record loud music or verbal abuse
  • Search and Rescue - Hear people trapped in basements, elevators, under rubble etc
  • Bomb Detection - Listen through packages for timers
  • Diagnostics - Find problems in engines, transmissions and other mechanical apparatus
  • Pest Control - Find location of insects or rodent infestations, termite colonies in walls, ceilings and floors
  • Plumbing - Find location of leaking pipes in concrete or walls.

Please Note: Listen through wall devices operate effectively on thicker solid walls as opposed to thinner walls or walls made of plaster board.  Brick walls that have a cavity layer will not work effectively.

This is a professional listen through wall device that is both practical and easy-to-use.  Great audio listening quality assured.

More Information
How do I use this LTW device?

Switch ON the device and insert the stereo earphones.  Next, hold the ceramic contact plate against any solid wall to hear what is being said through the wall.  Use the fine tuning filter switch to define the audio to your liking.

How long can I listen for?

Using a single lithium PP3 battery will power the device for 24 hours use.

Can it really pick up through 12 inches thick?

Yes.  The thicker the wall the better.  The wall must be completely solid and without a cavity gap in the wall between your wall and the adjoining wall.

Can it listen through a pane of glass window?


Is it possible for whoever is on the other side of the wall to know I am listening?


Can I record the audio of what I hear?

Yes.  The device is equipped with a recording MIC socket which allows any standard voice recorder to be plugged into the LTW device.

Can I use the listen through wall pro anywhere?

Yes.  The unit is small enough to carry in your pocket for worldwide use.

Technical Info
  • Professional listen through wall device
  • Sensitive acoustic amplifier
  • Penetrates solid walls up to 30 cm's / 12 inches thick
  • Filter fine-tuner for enhanced and defined audio listening
  • Brushed aluminium design
  • Earphone output socket
  • Recording output socket
  • Contact MIC input socket
  • Amplifier dimensions - 20 x 55 x 70 mm
  • Contact MIC dimensions - 26 x 18 mm
  • Weight - 157 grams
  • Power supply - 9 V battery
  • Battery life - 24 hours
  • Input - 2.5 mm mono MIC
  • Output - 3.5 mm stereo (ear) / 3.5 mm mono (rec)
  • Supplied with listen through wall pro, stereo earphones, and one (1)x 9 V battery
  • Ideal for gathering audio evidence or location of burst water pipes through solid brick walls

Please Note: Listen through wall devices operate effectively on thicker solid walls as opposed to thinner walls or walls made of plaster board.  Brick walls that have a cavity layer will not work effectively.

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