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Listen Through Walls Professional Device Contact MicrophoneListen Through Walls Professional Device ControlsListen Through Walls Device Main View

Listen Through Walls Professional Device


Listen Through Walls Professional is a professional-grade surveillance device comprising a highly sensitive contact microphone and a powerful amplifier unit, allowing you to pick up and amplify even the faintest sounds (as low as -80dB) through doors, heating pipes, walls, ceilings or floors, made of concrete, wood, drywall, brick, steel, etc. It is ideally suitable for professional surveillance tasks where sound clarity and high amplification are required, allowing you to hear sounds in the next room as if you were there.

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Product Description

Mode of operation

Sounds produced in a room adjacent to yours are sound-waves that reverberate against the wall, being deflected, muffled and dispersed by it. When you place the contact microphone device against the wall, it picks up those residual vibrations and passes them to the amplifier unit, which parses, amplifies and converts them back to original sounds, so that you may hear the sounds in the adjacent room as if you were there.


• Highly sensitive, detachable contact microphone
• Discreet, portable amplifier unit in a rugged, highly durable metal casing
• Extra audio outlet for parallel recording
• Replaceable 9V Lithium battery (60 hour charge)
• Ear-bud headphones

Click here to download instructions manual in PDF format.

Click here to learn about usage tips and add-ons suggested by our customer, allowing you to customize Listen Through Walls Professional device to suite your particular needs.

Additional Information

Weight 0.7 lbs
Dimensions 7.5 x 4 x 1.5 in

To protect your privacy, your credit card statement will display your purchase as “LTW”. The order will be delivered to you in discreet packaging, with the sender identified only as “LTW”.


The device comes with a 9 Volt Alcaline battery with 60 hour charge capacity. A set of plug-in headphones is also included.

4.75 out of 5

4 reviews for Listen Through Walls Professional Device

  1. 4 out of 5


    Very sensitive, but a bit difficult to understand what is actually being said at times.

    Do to the fact it actually makes the entire wall a mic. it also picks up other things in the background or building your listening to making it difficult to understand what people are saying. I feel it is a bit too pricy for what your getting.

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  2. 5 out of 5


    A bit pricey, but excellent quality. Made in Japan, so it’s not just some cheap Chinese knock-off. The mic is very sensitive and the amplifier seems calibrated to accentuate voice frequencies specifically, though I can’t be sure. Anyway, the voices come through pretty clear, at least through the brick wall I tried it on. Having the mic on a cord (about two feet) is great because you can just tape the microphone to the wall and not have to hold it tight against it all the time. Haven’t tried recording yet, but should be possible to have it record to my laptop with the right connector. The outlet on the device is 3.5mm female plug, and so is the microphone plug on the laptop, so it would have to be a 3.5mm male to male cable…

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  3. 5 out of 5


    Well made, sturdy device and great sound quality. The mic is sensitive and amplification is superb. I’ve tried pretty much every comparable device including those cheap Hong Kong trinkets for twenty bucks or so (all completely useless), and this is the best, professional-grade contact microphone device for the money. Delivery was fast, even with standard shipping.

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  4. 5 out of 5


    I purchased this item and it works great as it said , I was surprise with the support from the seller , the mic at first was working perfect the it was not and I contacted the seller by email and they responded to me within less than an hour they are sending me a free mic as replacement for the not working mic, I am really pleased that I bought from this seller and I advice to buy this great item.

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